TERMIUM Plus®

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

PITCH SCREW [25 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 - external organization data 2021-03-18

English

Subject field(s)
  • Compartment – Nomenclature 4.0
  • Museums and Heritage (General)
OBS

screw pitch gauge : an item in the "Metalworking Tools and Equipment" class of the "Tools and Equipment for Materials" category.

French

Domaine(s)
  • Tiroir – Nomenclature 4.0
  • Muséologie et patrimoine (Généralités)
OBS

calibre de pas de vis : objet de la classe «Outils et équipement du travail des métaux» de la catégorie «Outillage et équipement pour le traitement des matières».

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 2015-04-24

English

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

A screw propeller with controllable-pitch of the blades in the positive range of pitch angle.

OBS

controllable-pitch non-reversible propeller: term and definition standardized by ISO.

Key term(s)
  • controllable-pitch non-reversible propellor

French

Domaine(s)
  • Propulsion des bateaux

Spanish

Save record 3

Record 4 2015-04-15

English

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

A screw propeller with controllable pitch of the blades in positive and negative range of pitch angle.

OBS

controllable-pitch reversible propeller: term and definition standardized by ISO.

Key term(s)
  • controllable-pitch reversible propellor
  • controllable reversible pitch propellor

French

Domaine(s)
  • Propulsion des bateaux

Spanish

Save record 4

Record 5 2015-04-15

English

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

A screw propeller with controllable pitch of the blades.

OBS

controllable-pitch propeller: term and definition standardized by ISO.

Key term(s)
  • controllable-pitch propellor
  • controllable pitch propellor
  • variable pitch propellor

French

Domaine(s)
  • Propulsion des bateaux
DEF

Hélice dont les pales peuvent être orientées à volonté de la passerelle.

OBS

À noter : le pas est variable, les pales sont orientables.

OBS

hélice à pales orientables : terme et définition uniformisés par le Comité de normalisation de la terminologie navale.

Spanish

Campo(s) temático(s)
  • Propulsión de los barcos
Save record 5

Record 6 2015-04-15

English

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

A screw propeller with controllable pitch of the blades in positive and negative range of pitch angle and in feathering position.

OBS

controllable-pitch propeller including feathering position: term and definition standardized by ISO.

Key term(s)
  • controllable-pitch propellor including feathering position

French

Domaine(s)
  • Propulsion des bateaux

Spanish

Save record 6

Record 7 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

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Record 8 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 8

Record 9 2004-12-14

English

Subject field(s)
  • Mechanical Components
  • Chutes, Spouts and Conveyors
  • Food Industries
CONT

Reverse pitch is a screw element with a pitch designed to convey [a] product back to the screw preceding it. This creates a filled barrel section. Very effective in mixing, shearing and extending residence time.

Key term(s)
  • counter pitched screw element
  • left handed screw element

French

Domaine(s)
  • Composants mécaniques
  • Convoyeurs et goulottes (Manutention)
  • Industrie de l'alimentation
DEF

Elément de vis restrictif de pas inverse permettant une mise en pression du produit et une augmentation du traitement thermomécanique.

CONT

Le contrefilet, qui ne peut fonctionner que totalement rempli, empêche la vapeur d'eau de remonter vers la trémie et provoque l'élargissement de la distribution des temps de séjour.

OBS

Dans le contrefilet sont ménagées des ouvertures parallèles à l'axe ou hélicoïdales pour permettre la progression de la matière, qui est alors soumise à un cisaillement accru.

Spanish

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Record 10 2004-06-17

English

Subject field(s)
  • Metallurgy - General
DEF

A linear imperfection in a crystalline array of atoms.

CONT

Two basic types are recognized :(1) an edge dislocation corresponds to the row of mismatched atoms along the edge formed by an extra, partial plane of atoms within the body of a crystal;(2) a screw dislocation corresponds to the axis of a spiral structure in a crystal, characterized by a distortion that joins normally parallel planes together to form a continuous helical ramp(with a pitch of one interplanar distance) winding about the dislocaion. Most prevalent is the so-called mixed dislocation, which is any combination of an edge dislocation and a screw dislocation.

French

Domaine(s)
  • Métallurgie générale
DEF

Défaut linéaire dans l'empilement atomique d'un cristal

CONT

Deux types principaux de dislocations sont définis : la dislocation «coin» et la dislocation «vis». La dislocation coin correspond à l'insertion d'un demi-plan supplémentaire d'atomes dans un cristal. Le bord intérieur de ce demi-plan définit la ligne de dislocation. Le déplacement des atomes consécutif à cette introduction est principalement orienté perpendiculairement à la ligne de dislocation. La dislocation vis correspond à une distorsion locale qui amène les plans atomiques à se raccorder en forme de rampe hélicoïdale s'enroulant autour d'un axe, la ligne de dislocation. Le pas de cette rampe est égal à une distance interatomique dans la direction de la ligne de dislocation. D'autres types de dislocations existent, résultats de l'association des deux types principaux définis ci-dessus. On distingue également les dislocations dissociées en partielles.

Spanish

Campo(s) temático(s)
  • Metalurgia general
Save record 10

Record 11 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 11

Record 12 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 12

Record 13 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

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Record 14 1989-11-28

English

Subject field(s)
  • Servicing and Maintenance (Motor Vehicles and Bicycles)

French

Domaine(s)
  • Entretien et réparation (Véhicules automobiles et bicyclettes)

Spanish

Save record 14

Record 15 1988-12-22

English

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

French

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

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 Etats-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).

Spanish

Save record 15

Record 16 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 16

Record 17 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 17

Record 18 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 18

Record 19 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 19

Record 20 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 20

Record 21 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 21

Record 22 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 22

Record 23 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 23

Record 24 1988-01-15

English

Subject field(s)
  • General Scientific and Technical Vocabulary
  • Machine-Tooling (Metallurgy)
DEF

A tool for measuring the number of threads per inch [or metric distance] of internal and external threads.

Key term(s)
  • screw thread pitch gage
  • thread pitch gage

French

Domaine(s)
  • Vocabulaire technique et scientifique général
  • Usinage (Métallurgie)
DEF

Calibre permettant de relever les pas.

CONT

Pour relever les pas, on peut faire usage d'une jauge de filetage. Il en existe en pas métriques et en pas Whitworth.

Spanish

Save record 24

Record 25 1982-08-31

English

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

pitch of screw : Axial distance between adjacent turns of a single thread on a screw.

OBS

From the standpoint of good operation the most important structural features of a continuous centrifuge are as follows : a correctly-designed bowl, the speed of rotation of the bowl, the speed of rotation of the screw, the screw pitch.

Key term(s)
  • pitch of screw

French

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

Les facteurs constructifs importants d'un bon fonctionnement d'une décanteuse continue sont: la géométrie bien adaptée du bol, la vitesse de rotation du bol, la vitesse de rotation de la vis, le pas de la vis.

Spanish

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