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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 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.  2, record 1, English, - Unified%20National%20Extra%2DFine%20screw%20thread

Record number: 1, Textual support number: 1 OBS

See also "8N", "8UN", "12N", "12UN", and "16N", "16UN", which concern the 8-, 12-and 16-thread series.  3, record 1, English, - Unified%20National%20Extra%2DFine%20screw%20thread

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 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.  1, record 1, French, - filetage%20UNEF

Record number: 1, Textual support number: 1 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).  3, record 1, French, - filetage%20UNEF

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 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.  1, record 2, English, - American%20National%20thread

Record number: 2, Textual support number: 1 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.  3, record 2, English, - American%20National%20thread

Record number: 2, Textual support number: 2 OBS

Compare "Unified National thread".  3, record 2, English, - American%20National%20thread

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 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 (...)  2, record 2, French, - filetage%20American%20National

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 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.  1, record 3, English, - 16%2Dthread%20series

Record number: 3, Textual support number: 1 OBS

"16N": for the American National thread."16UN": for the Unified National thread.  2, record 3, English, - 16%2Dthread%20series

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 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.  1, record 3, French, - s%C3%A9rie%20%C3%A0%2016%20filets

Record number: 3, Textual support number: 1 OBS

"16 N" : pour le filetage American National; "16 UN" : pour le filetage Unified National.  2, record 3, French, - s%C3%A9rie%20%C3%A0%2016%20filets

Record number: 3, Textual support number: 2 OBS

Exemple de cotation pour un filetage fin de 1 po de diamètre et de 16 filets au po : 1-16 UNF.  2, record 3, French, - s%C3%A9rie%20%C3%A0%2016%20filets

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 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.  1, record 4, English, - 12%2Dthread%20series

Record number: 4, Textual support number: 1 OBS

"12N" : for the American National thread. "12UN" : for the Unified National thread.  2, record 4, English, - 12%2Dthread%20series

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

[...] un filetage Unified National à filets fins de 1 po de diamètre et de 12 filets au po, se cote : 1-12 UNF.  1, record 4, French, - s%C3%A9rie%20%C3%A0%2012%20filets

Record number: 4, Textual support number: 2 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.  1, record 4, French, - s%C3%A9rie%20%C3%A0%2012%20filets

Record number: 4, Textual support number: 1 OBS

"12 N" : pour le filetage American National; "12 UN" : pour le filetage Unified National.  2, record 4, French, - s%C3%A9rie%20%C3%A0%2012%20filets

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 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.  1, record 5, English, - 8%2Dthread%20series

Record number: 5, Textual support number: 1 OBS

"8N": for the American National thread. "8UN": for the Unified National thread.  2, record 5, English, - 8%2Dthread%20series

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

[...] un filetage Unified National à filets gros de 1 po de diamètre et de 8 filets au po, se cote : 1-8 UNC [...]  1, record 5, French, - s%C3%A9rie%20%C3%A0%208%20filets

Record number: 5, Textual support number: 2 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.  1, record 5, French, - s%C3%A9rie%20%C3%A0%208%20filets

Record number: 5, Textual support number: 1 OBS

Abréviation "8 N" pour le filetage American National et "8 UN" pour le filetage Unified National.  2, record 5, French, - s%C3%A9rie%20%C3%A0%208%20filets

Record 5,  Textual support,  Spanish