TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

PITCH DIAMETER [46 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2021-03-30

English

Subject field(s)
  • Percussion Instruments
CONT

The bass drum, or kick drum, is a large drum that produces a note of low definite or indefinite pitch. The instrument is typically cylindrical, with the drum's diameter much greater than the drum's depth, with a struck head at both ends of the cylinder.

OBS

Kick drums are also known as bass drums—but they’re distinct from the type of bass drums used in classical music ensembles. Orchestral bass drums tend to be far larger than drum kit bass drums. Unlike drum kit bass drums, which sit on the floor, orchestral bass drums sit suspended off the ground. And while drummers strike kick drums with a bass drum pedal, they strike orchestral bass drums with handheld beaters—usually mallets but sometimes standard drumsticks.

French

Domaine(s)
  • Instruments de musique à percussion

Spanish

Save record 1

Record 2 2016-02-25

English

Subject field(s)
  • Plastics Manufacturing
  • Facilities and Equipment (Rubber)
CONT

Many screw designs have been utilized over the years for the various extrusion processes and materials.... The best-known screws can be loosely separated into two categories-conventional screws and barrier screws. Conventional screws usually are single flighted designs with the flight lead(or flight pitch) equal to the screw's nominal diameter. This type is termed a square-pitched screw, and when no mixing devices are present, it usually is referred to as a metering screw.

CONT

The two basic approaches are used: the single metering or compression screw ...; and the barrier flight screw.

French

Domaine(s)
  • Plasturgie
  • Installations et équipement (Caoutchouc)
OBS

Suivant les polymères, on choisira, soit des vis à compression courte (exemple des polyamides); soit des vis à compression longue (exemple du poly(chlorure de vinyle)).

Spanish

Save record 2

Record 3 2015-03-12

English

Subject field(s)
  • Propulsion of Water-Craft
DEF

The quotient of a pitch and the propeller diameter.

OBS

pitch ratio: term and definition standardized by ISO.

French

Domaine(s)
  • Propulsion des bateaux

Spanish

Save record 3

Record 4 2014-05-15

English

Subject field(s)
  • Springs (Mechanical Components)
DEF

A barrel-shaped coil spring made of a material with a constant or variable wire diameter and variable pitch.

OBS

barrel spring: term and definition standardized by ISO.

French

Domaine(s)
  • Ressorts (Composants mécaniques)
DEF

Ressort hélicoïdal en forme de tonneau fabriqué à partir d'un fil de diamètre constant ou variable et d'un pas variable.

OBS

ressort à barillet : terme et définition normalisés par l'ISO.

Spanish

Save record 4

Record 5 2011-10-25

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The quotient of the pitch at the reference surface, expressed in millimetres, divided by [pi].

CONT

Module(inch) is the ratio of the pitch diameter in inches to the number of teeth. It is the reciprocal of the diametral pitch. Module(millimeter) is the ratio of the pitch diameter in millimeters to the number of teeth. It is converted to diametral pitch by the equation : Pd=25. 4/module(millimeters).

OBS

Module may be in either inch or millimetre units. In inch units module is the reciprocal of the diametral pitch.

OBS

module: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Quotient du pas, mesuré sur la surface de référence, exprimé en millimètres, par le nombre [pi].

OBS

module : terme et définition normalisés par l'ISO.

Spanish

Save record 5

Record 6 2011-05-09

English

Subject field(s)
  • Genetics
CONT

The double helix described by Watson and Crick ... is called the B-form of DNA.

OBS

Its [B-form] characteristics features lie in its dimensions : a helical diameter of 2. 37 nm(nanometers), a rise of 0. 34 nm per base pair, and a pitch(i. e. distance taken up by a complete turn of the helix) of 3. 4 nm, this corresponding to ten base pairs per turn.

French

Domaine(s)
  • Génétique
OBS

Il s'agit de la forme la plus courante de l'ADN, soit celle qui a été décrite par Watson et Crick.

OBS

La forme B de l'ADN se caractérise par le diamètre de l'hélice de 2,37 nm (nanomètres), la distance entre les paires de bases de 0,34 nm, et le pas de l'hélice (distance entre deux points sur une projection horizontale) de 3,4 nm, soit l'équivalent de 10 paires de bases par tour.

Spanish

Save record 6

Record 7 2010-03-29

English

Subject field(s)
  • Mechanics
CONT

The dimensions of the bore holes are a function of the published inside pipe diameter(D). The characteristics of importance and their associated quality criteria are as follows :...(b) 3 holes on a pitch circle diameter 0. 15 D-0. 155 D. The bore shall be such that the sum of the bore areas is 3%-5% of the D area....

French

Domaine(s)
  • Mécanique
CONT

La dimension des trous d'alésage est établie d'après le diamètre (D) intérieur de conduite publié. Les principales caractéristiques du redresseur ainsi que les critères de qualité connexes sont les suivants : [...] b) il doit y avoir trois trous sur un diamètre de perçage se situant entre 0.15 D et 0.155 D. L'alésage doit être tel que la somme des aires d'alésage se situe entre 3 % et 5 % de l'aire D; [...]

Spanish

Save record 7

Record 8 2009-07-28

English

Subject field(s)
  • Launching and Space Maneuvering
CONT

Pitch control motor, simulated for this [Appolo] mission, is 9 in in diameter, 22 in long, and weighs 35 lb.

French

Domaine(s)
  • Lancement et manœuvres dans l'espace

Spanish

Save record 8

Record 9 2006-11-07

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The diameter of the pitch circle.

OBS

Term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Diamètre du cercle primitif de fonctionnement.

OBS

diamètre primitif de fonctionnement : terme et définition normalisés par l'ISO.

Spanish

Save record 9

Record 10 2006-11-07

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The quotient of the number [pi] divided by the pitch, expressed in inches, or the quotient of the number of teeth divided by the reference diameter, expressed in inches.

OBS

diametral pitch: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Quotient du nombre [pi] par le pas, exprimé en inches, ou quotient du nombre de dents par le diamètre de référence exprimé en inches.

OBS

diametral pitch : terme et définition normalisés par l'ISO.

Spanish

Save record 10

Record 11 2006-09-27

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The quotient of the transverse pitch, expressed in millimetres, divided by the number [pi](or the quotient of the reference diameter expressed in millimetres, divided by the number of teeth).

OBS

transverse module: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Quotient du pas apparent, exprimé en millimètres, par le nombre [pi] (ou quotient du diamètre de référence, exprimé en millimètres, par le nombre de dents).

OBS

module apparent : terme et définition normalisés par l'ISO.

Spanish

Save record 11

Record 12 2005-10-26

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and a selection of special threads that cover nonstandard combinations of diameter and pitch. In general, the unified screw threads are limited to three series : coarse(UNC), fine(UNF), and extrafine(UNEF). A 1/4-inch-diameter thread in the UNC series has 20 threads/in., while in the UNF it has 28... The extrafine thread series(UNEF and NEF) is used principally in aeronautical structures where an extremely shallow thread is needed for thin-walled material and where a maximum practicable number of threads is required for a given length.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
OBS

Série à filets surfins. Largement utilisée dans l'assemblage d'équipement et d'instruments en aéronautique pour le taraudage de pièces minces, de tubes, de viroles, de brides et de plateaux d'accouplement, de douilles, etc, et lorsqu'il importe d'avoir un nombre maximal de filets sur une longueur requise.

OBS

«UNEF» = Unified extra-fine thread («pas extra-fin»).

OBS

extrafin : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2004).

Spanish

Save record 12

Record 13 2005-10-26

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and a selection of special threads that cover nonstandard combinations of diameter and pitch. In general, the unified screw threads are limited to three series : coarse(UNC), fine(UNF), and extrafine(UNEF). A 1/4-inch.-diameter thread in the UNC series has 20 threads/in., while in the UNF series it has 28.... The extrafine thread series(UNEF and NEF) is used principally in aeronautical structures where an extremely shallow thread is needed for thin-walled material and where a maximum practicable number of threads is required for a given length.

OBS

See also "8N", "8UN", "12N", "12UN", and "16N", "16UN", which concern the 8-, 12- and 16-thread series.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

Norme BS 1580 : 1953 «Unified Screw Threads». Il s'agit des filetages cylindriques de mécanique générale, au profil ISO, mais avec les cotes en pouces. Depuis 1949, le Royaume-Uni, le Canada et les États-Unis se sont mis d'accord sur ces filetages et leur désignation : «UNC» pour «Unified coarse thread» (gros pas); «UNF» pour «Unified fine thread» (pas fin) : «UNEF» pour «Unified extra-fine» (pas extra fin); «UN» pour «Unified constant pitch» (pas constant). Ces filetages figurent [...] d'une manière plus complète dans la norme américaine ASA B1.1-1960 qui concerne les filetages unifiés.

OBS

extrafin : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2004).

Spanish

Save record 13

Record 14 2003-07-16

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Joining Elements (Mechanical Components)
  • Special-Language Phraseology
CONT

Detailed parts inspection and measurement, including, but not limited to, the application of aerospace Non-destructive Testing and Inspection (NDT/I) and dimensional checks such as precise thread measurement; ...

CONT

Thread Measurement. The most important factors when threaded parts must meet engineering specifications are accuracy and consistency. Our line of thread diameter gages inspects the effects of all thread element variations and pitch diameter of the threads.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Éléments d'assemblage (Composants mécaniques)
  • Phraséologie des langues de spécialité
CONT

La machine SIP est capable de réaliser des mesures externes (Tampon lisse, jauge conique, etc), des mesures internes (bague lisse, calibre à mâchoire, etc), des mesures de filetage (diamètre extérieur, intérieur, sur flanc, le pas et l'angle). La capacité de mesure de l'instrument est de 0 à 1000 mm. L'incertitude de mesure est de ±0,5 µm.

Spanish

Save record 14

Record 15 2002-08-21

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

Half the difference between the throat diameter and the pitch diameter.

OBS

Terminology of worm gear geometry.

OBS

working addendum: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Demi-différence entre le diamètre de tête et le diamètre de fonctionnement.

OBS

Terminologie de la géométrie des engrenages à vis.

OBS

saillie primitive de fonctionnement : terme et définition normalisés par l'ISO.

Spanish

Save record 15

Record 16 2002-08-21

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

Half the difference between the pitch diameter and the root diameter.

OBS

Terminology of worm gear geometry.

OBS

working dedendum: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Demi-difference entre le diamètre de fonctionnement et le diamètre de pied.

OBS

Terminologie de la géométrie des engrenages à vis.

OBS

creux de fonctionnement : terme et définition normalisés par l'ISO.

Spanish

Save record 16

Record 17 2002-08-21

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

Half the algebraic difference between the reference diameter and the pitch diameter.

OBS

It is equal to the specified centre distance, minus half of the sum of the reference diameter of the worm and the pitch diameter of the wheel.

OBS

Terminology of worm gear geometry.

OBS

profile shift: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Demi-différence algébrique entre le diamètre de référence et le diamètre de fonctionnement de la roue.

OBS

[Le déport] est la différence, positive ou négative, entre l'entraxe de l'engrenage et la demi-somme du diamètre de référence de la vis et du diamètre de fonctionnement de la roue.

OBS

Terminologie de la géométrie des engrenages à vis.

OBS

déport : terme et définition normalisés par l'ISO.

Spanish

Save record 17

Record 18 2002-06-06

English

Subject field(s)
  • Weather Stations and Meteorological Instruments and Equipment
DEF

Rapid vertical oscillations of the column of a mercury barometer.

CONT

The mercurial barometer... in its simplest form... consists of a glass tube a little more than 30 inches in length and of uniform internal diameter. With one end closed, the tube is filled with mercury, and inverted into a cup of mercury. The mercury in the tube falls until the column is just supported by the pressure of the atmosphere on the open cup, leaving a vacuum at the upper end of the tube. The height of the column indicates atmospheric pressure, greater pressures supporting higher columns of mercury. The mercurial barometer is subject to rapid variations in height, called pumping, due to pitch and roll of the vessel and temporary changes in atmospheric pressure in the vicinity of the barometer. Because of this... the mercurial barometer has been replaced at sea by the aneroid barometer.

Key term(s)
  • barometer pumping

French

Domaine(s)
  • Stations, instruments et équipements météorologiques
DEF

Rapides oscillations verticales de la colonne d'un baromètre à mercure.

Spanish

Campo(s) temático(s)
  • Estaciones, instrumentos y equipos meteorológicos
DEF

Desplazamientos verticales rápidos que experimenta la columna de un barómetro de mercurio.

Save record 18

Record 19 1999-10-13

English

Subject field(s)
  • Tools and Equipment (Mechanics)
  • Machine-Tooling (Metallurgy)
DEF

A micrometer used to measure pitch diameter of a screw thread.

French

Domaine(s)
  • Outillage (Mécanique)
  • Usinage (Métallurgie)

Spanish

Save record 19

Record 20 1999-05-10

English

Subject field(s)
  • Fire-Fighting and Rescue Equipment
  • Pipes and Fittings
DEF

A fitting for connecting hoses of different pitch or couplings of different diameters.

DEF

A fitting for connecting hose couplings of different size or thread pitch. If the coupling being attached is smaller in diameter, the adapter is called a reducer; if larger, it is called an increaser.

DEF

Fitting used for connecting lengths of hose which have dissimilar couplings.

OBS

Hose adapter: term and definition (e) standardized by ISO.

Key term(s)
  • adaptor

French

Domaine(s)
  • Matériel de secours et de lutte (incendies)
  • Tuyauterie et raccords
DEF

Pièce se composant de deux demi-raccords d'un modèle différent montés sur un même corps et servant à réunir deux tuyaux ou un tuyau et une pièce de jonction qui n'ont pas le même système de raccord.

DEF

Raccord utilisé pour relier deux longueurs de tuyaux qui n'ont pas les mêmes raccords.

DEF

Pièce se composant de deux demi-raccords montés sur un même corps et servant à réunir deux raccords dont les filets sont différents.

OBS

Raccord intermédiaire : terme et définition (e) normalisés par l'ISO.

Spanish

Campo(s) temático(s)
  • Equipo de salvamento y lucha contra incendios
  • Tuberías y accesorios
Save record 20

Record 21 1998-06-09

English

Subject field(s)
  • Joining Elements (Mechanical Components)
  • Aeronautical Engineering and Maintenance
CONT

The unified thread form accompanied by the unified thread standards has in the past fulfilled the necessary requirements for interchangeability of threaded products between the United States, Great Britain, and Canada. This modified thread form represented two compromises between British Whitworth and United Stated National thread forms. The British accepted the 60° thread angle of the American thread, and the Americans accepted a rounded root and crest similar to the Whitworth form. The United States National unified form for external threads has a rounded root and may have either a rounded or flat crest. The unified thread contours provide advantages over both the earlier forms .... The unified thread is a general-purpose thread that is particularly suited for fasteners.

CONT

Unified and American National screw thread standards... consist of six series of threads and a selection of special threads that cover nonstandard combinations of diameter and pitch. In general, the unified screw threads are limited to three series; coarse(UNC), fine(UNF), and extrafine(UNEF).

OBS

Under the unified system, threads are specified by giving in order the nominal diameter, number of threads per inch, the initial letters such as UNC or UNF that identify the series, and class of thread (IA, 2A, and 3A or 1B, 2B and 3B). ... the specification for a left-hand thread must have the letters LH included.

OBS

See also "8UN", "12UN", and "16UN", which designate the 8-, 12-, and 16-thread series.

CONT

[Example of a thread identification by standardized symbols]:1/2-13UNC-2ALH.

OBS

unified thread: term standardized by ISO.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
  • Aérotechnique et maintenance
CONT

Depuis 1949, le Royaume-Uni, le Canada et les Etats-Unis se sont mis d'accord sur ces filetages et leur désignation : «UNC» pour "Unified coarse thread [...] «UNF» pour «Unified fine thread» [...] «UNEF» pour «Unified extra-fine» [...] «UN» pour «Unified constant pitch» [...] Ces filetages figurent [...] dans la norme américaine ASA B1.1-1960 qui concerne les filetages unifiés.

CONT

Le filetage «Unified National» comprend les séries à filets gros et les séries à filets fins.

OBS

filetage en inches à profil UNJ : terme normalisé par l'ISO.

Spanish

Save record 21

Record 22 1997-12-17

English

Subject field(s)
  • Plastics Manufacturing
CONT

Many screw designs have been utilized over the years for the various extrusion processes and materials.... The best-known screws can be loosely separated into two categories-conventional screws and barrier screws. Conventional screws usually are single flighted designs with the flight lead(or flight pitch) equal to the screw's nominal diameter. This type is termed a square-pitched screw, and when no mixing devices are present, it usually is referred to as a metering screw. Barrier screws are seen in many design configurations used in the extrusion industry, depending upon the designer. These screws have a second flight, which acts as a melt/solid separator designed to enhance output stability and allow higher usable output performance levels.

CONT

The two basic approaches are used: the single metering or compression screw ...; and the barrier flight screw.

French

Domaine(s)
  • Plasturgie
CONT

La vis Maillefer consiste en deux canaux séparés, constitués par deux filets de vis de pas différents, se succédant le long de la vis avec une zone de chevauchement des deux filets. Le filet supplémentaire, dont le pas est tel qu'il correspond à un tour de moins que le filet principal sur la longueur de la zone de compression, balaie dans cette zone la largeur du canal, définissant deux canaux de largeur variable. En fait la position du filet supplémentaire correspond à celle que prendrait la frontière entre solide et liquide du processus de plastification par l'arrière du filet. On peut alors constater que le solide reste contenu dans le filet principal et que le liquide s'accumule dans le filet secondaire situé en arrière. Tout se passe comme si le filet supplémentaire était une frontière forcée entre le lit solide et la poche de matière fondue. Ainsi les deux états de la matière sont parfaitement séparés, ce qui permet d'éviter la pollution de la poche liquide par des fragments de solide.

Key term(s)
  • vis BM Maillefer
  • vis BM-C Maillefer

Spanish

Save record 22

Record 23 1994-05-30

English

Subject field(s)
  • Joining Elements (Mechanical Components)
  • Aeronautical Engineering and Maintenance
OBS

pitch diameter of internal thread : Term standardized by ISO.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
  • Aérotechnique et maintenance
OBS

diamètre sur flancs du filetage intérieur : Terme normalisé par l'ISO.

Spanish

Save record 23

Record 24 1994-05-30

English

Subject field(s)
  • Joining Elements (Mechanical Components)
  • Aeronautical Engineering and Maintenance
OBS

pitch diameter of internal thread : Term standardized by ISO.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
  • Aérotechnique et maintenance
OBS

diamètre sur flancs du filetage extérieur : Terme normalisé par l'ISO.

Spanish

Save record 24

Record 25 1992-05-07

English

Subject field(s)
  • Gears and Friction Wheels
DEF

The quotient of the number [pi] to the transverse pitch expressed in inches(or the quotient of the number of teeth to the reference diameter expressed in inches).

OBS

Term and definition standardized by ISO.

French

Domaine(s)
  • Engrenages et roues de friction
DEF

Quotient du nombre [pi] par le pas apparent, exprimé en inches (ou quotient du nombre de dents par le diamètre primitif, exprimé en inches).

OBS

Terme et définition normalisés par l'ISO.

Spanish

Save record 25

Record 26 1990-09-28

English

Subject field(s)
  • Guns (Land Forces)

French

Domaine(s)
  • Canons (Forces terrestres)

Spanish

Save record 26

Record 27 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and selection of special threads that cover nonstandard combinations of diameter and pitch. In general, the unified screw threads are limited to three series : coarse(UNC), fine(UNF), and extrafine(UNEF). A 1/4-inch.-diameter thread in the UNC series has 20 threads/in., while in the UNF series it has 28. In the unified and American National standards, the coarse thread series(UNC and NC) is recommended for general industrial use on threaded machine parts and for screws and bolts. Because a coarse thread has fewer threads per inch than a fine thread of the same diameter, the helix angle is greater, and the thread travels farther in one turn. A coarse thread is preferred when rapidity and ease of assembly are desired, and where strength and clamping power are not of prime importance.

CONT

Threads are designated by standardized notes. Under the unified system, threads are specified by giving in order the nominal diameter, number of threads per inch, the initial letters such as UNC or UNF that identify the series, and class of thread (1A, 2A, and 3A or 1B, 2B and 3B). Threads are considered to be right-hand and single unless otherwise noted; therefore the specification for a left-hand thread must have the letters LH included.

CONT

[Example of a thread identification by standardized symbols]: 1/2-13UNC-2ALH.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

Norme BS 1580 : 1953 "Unified Screw Threads". Il s'agit des filetages cylindriques de mécanique générale, au profil ISO, mais avec les cotes en pouces. Depuis 1949, le Royaume-Uni, le Canada et les États-Unis se sont mis d'accord sur ces filetages et leur désignation : "UNC" pour "Unified coarse thread" (gros pas)"; "UNF" pour "Unified fine thread"(pas fin); "UNEF" pour "Unified extra-fine thread" (pas extra-fin); "UN" pour "Unified constant pitch" (pas constant). Ces filetages figurent [...] d'une manière plus complète dans la norme américaine ASA B1.1-1960 qui concerne les filetages unifiés.

Spanish

Save record 27

Record 28 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and a selection of special threads that cover nonstandard combinations of diameter and pitch.

OBS

Abbreviation "N": used in the six series: "NC thread" (National Coarse); "NF thread" (National Fine); "NEF" (National Extra-Fine); "8N", "12N" and "16N", which concern the 8-, 12-, and 16- thread series.

OBS

Compare "Unified National thread".

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
OBS

Le filet "Unified National" est le plus fréquemment utilisé en Amérique du Nord. Le terme "Unified" fut défini à la suite d'un consensus entre les comités de normalisation du Royaume-Uni, des Etats-Unis et du Canada qui, en 1948, mirent au point des normes communes aux filets. Antérieurement, le fond et le sommet des filets "American National" étaient plats (...)

Spanish

Save record 28

Record 29 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
  • Machine-Tooling (Metallurgy)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and a selection of special threads that cover nonstandard combinations of diameter and pitch. In general the unified screw threads are limited to three series : coarse(UNC), fine(UNF), and extrafine(UNEF). A 1/4-inch-diameter thread in the UNC series has 20 threads/in., while in the UNF series it has 28... The fine thread series(UNF and NF) is recommended for general use in the automotive and air craft fields for threads subject to strong vibration. In general, a fine thread should be used only where close adjustment, extra strength, or increased resistance to loosening is a factor.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
  • Usinage (Métallurgie)
OBS

Série à filets fins. Pour pièces et équipement où l'emploi des filets fins est plus avantageux. Ce filetage offre une plus grande résistance à la traction et à la torsion, tout en étant moins sujet au déboulonnage sous l'effet des vibrations.

OBS

"UNF"="Unified fine thread" (pas fin).

Spanish

Save record 29

Record 30 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads [UNC or NC; UNF or NF; UNEF or NEF; 8UN or 8N; 12UN or 12N; 16UN or 16N] and a selection of special threads that cover nonstandard combinations of diameter and pitch.... The 16-thread series(16UN or 16N) is a uniform pitch series for applications that require a very fine thread, as in threaded adjusting collars and bearing retaining nuts. This series is used as a continuation of the extrafine thread series for diameters greater than 2 in.

OBS

"16N": for the American National thread."16UN": for the Unified National thread.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

L'utilisation type des diverses séries est la suivante : [...]. Série à 16 filets. Pour le filetage des colliers d'ajustement et des écrous de retenue des roulements et pour un usage général comme le prolongement des filets surfins.

OBS

"16 N" : pour le filetage American National; "16 UN" : pour le filetage Unified National.

OBS

Exemple de cotation pour un filetage fin de 1 po de diamètre et de 16 filets au po : 1-16 UNF.

Spanish

Save record 30

Record 31 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads [UNC or NC; UNF or NF; UNEF or NEF; 8UN or 8N; 12UN or 12N; 16UN or 16N] and a selection of special threads that cover nonstandard combinations of diameter and pitch... The 8-thread series(8N) with 8 threads/in. for all diameters is used on bolts for high-pressure flanges, cylinder-head studs, and other fasteners against pressure, where it is required that an initial tension be set up so that the joint will not open when steam or other pressure is applied. This series has come into general use for many types of engineering work. It is sometimes used as a substitute for the coarse thread series for diameters greater then 1 in.

OBS

"8N": for the American National thread. "8UN": for the Unified National thread.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

[...] un filetage Unified National à filets gros de 1 po de diamètre et de 8 filets au po, se cote : 1-8 UNC [...]

CONT

L'utilisation type des diverses séries est la suivante : [...]. Série à 8 filets. Boulons de serrage pour brides de canalisations sous pression élevée. Goujons pour culasses de moteurs [...]. Cette série remplace la série à filets gros sur les pièces de visserie de plus grandes dimensions.

OBS

Abréviation "8 N" pour le filetage American National et "8 UN" pour le filetage Unified National.

Spanish

Save record 31

Record 32 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
OBS

ISO metric thread series are selections of diameter-pitch combinations that are distinguished from each other by the different pitch applied to a specific diameter(MI0 X 1. 5 coarse series or MI0 X 1. 25 fine series).

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

Filetages profil ISO (filetages métriques à filet triangulaire, remplaçant le profil SI) suivant normes NF E03-001 ET 013 [...]. La norme NF E03-03 constitue une vue d'ensemble des filetages métriques à filet triangulaire [...] conformes aux recommandations de l'ISO. Il appartient à chaque branche d'industrie de choisir, par sélection, dans les filetages de cette norme, les séries pas-diamètres qui lui sont nécessaires.

Spanish

Save record 32

Record 33 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads [UNC or NC; UNF or NF; UNEF or NEF; 8UN or 8N; 12UN or 12N; 16UN or 16N] and a selection of special threads that cover nonstandard combinations of diameter and pitch... The 12-thread series(12UN or 12N) is a uniform pitch series that is widely used is industry for thin nuts on shafts and sleeves. This series is considered to be a continuation of the fine-thread series for diameters greater than 1 1/2 in.

OBS

"12N": for the American National thread. "12UN": for the Unified National thread.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

[...] un filetage Unified National à filets fins de 1 po de diamètre et de 12 filets au po, se cote : 1-12 UNF.

CONT

L'utilisation type des diverses séries est la suivante : [...]. Série à 12 filets. Utilisée couramment en chaudronnerie, dans les diamètres jusqu'à 1 3/4 po, pour refaire les filets taraudés usés et pour un usage général comme le prolongement des filets fins.

OBS

"12 N" : pour le filetage American National; "12 UN" : pour le filetage Unified National.

Spanish

Save record 33

Record 34 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and a selection of special threads that cover nonstandard combinations of diameter and pitch. In general, the unified screw threads are limited to three series : coarse(UNC), fine(UNF), and extrafine(UNEF). A 1/4-inch-diameter thread in the UNC series has 20 threads/in., while in the UNF series it has 28. In the Unified and American National standards, the coarse thread series(UNC and NC) is recommended for general industrial use on threaded machine parts and for screws and bolts. Because a coarse thread has fewer threads per inch than a fine thread of the same diameter, the helix angle is greater, and the thread travels farther in one turn. A coarse thread is preferred when rapidity and ease of assembly are desired, and where strength and clamping power are not of prime importance.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
OBS

Série à filets gros : Pour pièces et équipement ordinaires dans l'industrie et le commerce.

OBS

"UNC"="Unified coarse thread" (gros pas).

Spanish

Save record 34

Record 35 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and a selection of special threads that cover nonstandard combinations of diameter and pitch. In general, the unified screw threads are limited to three series : coarse(UNC), fine(UNF), and extrafine(UNEF). A 1/4-inch.-diameter thread in the UNC series has 20 threads/in., while in the UNF series it has 28.... The fine thread series(UNF and NF) is recommended for general use in the automotive and air craft fields for threads subject to strong vibration. In general, a fine thread should be used only where close adjustment, extra strength, or increased resistance to loosening is a factor.

CONT

Threads are designated by standardized notes. Under the unified system, threads are specified by giving in order the nominal diameter, number of threads per inch, the initial letters such as UNC or UNF that identify the series, and class of thread (1A, 2A, and 3A or 1B, 2B, and 3B). Threads are considered to be right-hand and single unless otherwise noted; therefore the specification for a left-hand thread must have the letters LH included.

CONT

[Example of a thread identification by standardized symbols]: 1/2-13UNC-2ALH.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

Norme BS 1580 : 1953 "Unified Screw Threads". Il s'agit des filetages cylindriques de mécanique générale, au profil ISO, mais avec les cotes en pouces. Depuis 1949, le Royaume-Uni, le Canada et les États-Unis se sont mis d'accord sur ces filetages et leur désignation : "UNC" pour "Unified coarse thread" (gros pas). "UNF" pour "Unified fine thread" (pas fin). "UNEF" pour "Unified extra-fine thread" (pas extra-fin). "UN" pour "Unified constant pitch" (pas constant). Ces filetages figurent [...] d'une manière plus complète dans la norme américaine ASA B1.1-1960 qui concerne les filetages unifiés.

Spanish

Save record 35

Record 36 1988-03-28

English

Subject field(s)
  • Lathe Work (Machine-Tooling)
CONT

The three-wire method of measuring threads is... recognized as one of the best methods of checking the pitch diameter because the results are least affected by an error which may be present in the included thread angle.... Three wires, of equal diameter, are placed in thread; two on one side and one on the other side.... A standard micrometer may then be used to measure the distance over the wires.

French

Domaine(s)
  • Tournage sur métaux
CONT

Indépendamment des tampons et bagues filetées, d'un usage courant, pour le contrôle des filetages, la vérification du diamètre à flancs de filet est également faite au moyen d'un micromètre à filet de vis ou par la méthode des piges (tampons tangents cylindriques).

Spanish

Save record 36

Record 37 1988-03-28

English

Subject field(s)
  • Machine-Tooling (Metallurgy)
CONT

Threads may also be checked by the screw-thread-comparator micrometer which has two conical measuring surfaces. Since it does not measure the pitch diameter, it is important to set this instrument to a thread plug gauge before measuring a threaded workpiece.

French

Domaine(s)
  • Usinage (Métallurgie)

Spanish

Save record 37

Record 38 1985-02-22

English

Subject field(s)
  • Aircraft Propulsion Systems
CONT

The large inlet-plenum diameter of(the test cell) allows room to vary the angle of the freejet nozzle supplying air to the fuselage forebody/inlet/engine under test, between [+-] 15° in yaw and between +45° and-15° in pitch.

French

Domaine(s)
  • Propulsion des aéronefs

Spanish

Save record 38

Record 39 1983-10-02

English

Subject field(s)
  • Propulsion of Water-Craft
OBS

Propeller with same numerical diameter and pitch. Probably a familiar term. Impossible to confirm in any source, reliable or otherwise.

French

Domaine(s)
  • Propulsion des bateaux
OBS

Impossible de trouver un équivalent. Traduit provisoirement par hélice carrée.

Spanish

Save record 39

Record 40 1982-08-31

English

Subject field(s)
  • Lathe Work (Machine-Tooling)
OBS

FIST, 45-11-137. Tap hand high speed steel bottoming type(...) pitch diameter limit for taps thru 1 in diameter to be no more than basic plus. 002 in to basic plus. 0025 in. tolerance on tap pitch diameter(AFNOR 81, E66-110).

French

Domaine(s)
  • Tournage sur métaux
OBS

AFNOR 81, E66-110, 13.

Spanish

Save record 40

Record 41 1982-08-31

English

Subject field(s)
  • Lathe Work (Machine-Tooling)
OBS

AFNOR 81, E66-110, 18. Tap hand high speed steel bottoming type(...) pitch diameter limit for taps thru 1 in diameter to be no more than basic plus. 002 in to basic plus. 0025 in.(FIST 45-11-137). basic(FIST 45-11-137).

French

Domaine(s)
  • Tournage sur métaux
OBS

AFNOR 81, E66-110, 13.

Spanish

Save record 41

Record 42 1982-08-31

English

Subject field(s)
  • Construction Tools
OBS

FIST, 45-11-253. Tap hand high speed steel plug type(...) spiral pointed pitch diameter limit for taps thru 1 in diameter to be no more than basic plus. 002 in to basic plus. 0025 in. spiral point(AFNOR 81, E66-110-17).

French

Domaine(s)
  • Outils (Construction)
OBS

AFNOR 81, E66-110-11. caractéristiques de coupes - angles.

Spanish

Save record 42

Record 43 1982-02-23

English

Subject field(s)
  • Aeroindustry
  • Air Transport
OBS

machining.

French

Domaine(s)
  • Constructions aéronautiques
  • Transport aérien

Spanish

Save record 43

Record 44 1981-06-19

English

Subject field(s)
  • Industrial Tools and Equipment

French

Domaine(s)
  • Outillage industriel

Spanish

Save record 44

Record 45 1981-06-19

English

Subject field(s)
  • Industrial Tools and Equipment

French

Domaine(s)
  • Outillage industriel

Spanish

Save record 45

Record 46 1979-08-22

English

Subject field(s)
  • Cranes (Hoisting and Lifting)
  • Cranes (Construction Sites)
OBS

Diameter of lagging, or sheave, to centerline of the wire rope.

French

Domaine(s)
  • Grues (Levage)
  • Grues (Chantiers)
OBS

Diamètre d'une coquille ou d'une poulie, mesuré jusqu'à l'axe du câble métallique.

Spanish

Save record 46

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