TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
UNIFIED SCREW THREAD [1 record]
Record 1 - internal organization data 1998-06-09
Record 1, English
Record 1, Subject field(s)
- Joining Elements (Mechanical Components)
- Aeronautical Engineering and Maintenance
Record 1, Main entry term, English
- unified thread
1, record 1, English, unified%20thread
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
- unified screw thread 2, record 1, English, unified%20screw%20thread
correct
- National unified thread 3, record 1, English, National%20unified%20thread
Record 1, Textual support, English
Record number: 1, Textual support number: 1 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. 1, record 1, English, - unified%20thread
Record number: 1, Textual support number: 2 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). 1, record 1, English, - unified%20thread
Record number: 1, Textual support number: 1 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. 1, record 1, English, - unified%20thread
Record number: 1, Textual support number: 2 OBS
See also "8UN", "12UN", and "16UN", which designate the 8-, 12-, and 16-thread series. 3, record 1, English, - unified%20thread
Record number: 1, Textual support number: 3 CONT
[Example of a thread identification by standardized symbols]:1/2-13UNC-2ALH. 1, record 1, English, - unified%20thread
Record number: 1, Textual support number: 3 OBS
unified thread: term standardized by ISO. 4, record 1, English, - unified%20thread
Record 1, French
Record 1, Domaine(s)
- Éléments d'assemblage (Composants mécaniques)
- Aérotechnique et maintenance
Record 1, Main entry term, French
- filetage unifié
1, record 1, French, filetage%20unifi%C3%A9
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- filetage Unified National 2, record 1, French, filetage%20Unified%20National
masculine noun
- filetage en inches à profil UNJ 3, record 1, French, filetage%20en%20inches%20%C3%A0%20profil%20UNJ
masculine noun, standardized
Record 1, Textual support, French
Record number: 1, Textual support number: 1 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. 1, record 1, French, - filetage%20unifi%C3%A9
Record number: 1, Textual support number: 2 CONT
Le filetage «Unified National» comprend les séries à filets gros et les séries à filets fins. 2, record 1, French, - filetage%20unifi%C3%A9
Record number: 1, Textual support number: 1 OBS
filetage en inches à profil UNJ : terme normalisé par l'ISO. 4, record 1, French, - filetage%20unifi%C3%A9
Record 1, Spanish
Record 1, Textual support, Spanish
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