TERMIUM Plus®

From: Translation Bureau

On social media

Consult the Government of Canada’s terminology data bank.

CREST DIAMETER [4 records]

Record 1 1999-01-13

English

Subject field(s)
  • Metrology and Units of Measure
  • Machine-Tooling (Metallurgy)
  • Joining Elements (Mechanical Components)
DEF

The largest diameter of a screw thread, measured at the crest for an external(male) thread and at the root for an internal(female) thread.

OBS

nominal diameter: term standardized by ISO-5843-2, 1990, Aerospace Rivets.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Usinage (Métallurgie)
  • Éléments d'assemblage (Composants mécaniques)
OBS

nominal : Se dit de la cote ordinairement employée pour indiquer la dimension du diamètre d'une vis, d'un arbre.

OBS

diamètre nominal : terme normalisé par l'ISO-5843-2, 1990, Rivets pour les constructions aérospatiales.

Spanish

Save record 1

Record 2 1988-12-22

English

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

[SI metric thread system.] Tolerance positions establish the maximum material limits of the pitch and crest diameters for both internal and external threads. The series of tolerance-position symbols to reflect varying amounts of allowance are: For external threads: "e" = large allowance; "g" = small allowance; "h" = no allowance. [And] For internal threads: "G" = small allowance: "H" = no allowance.

French

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

Spanish

Save record 2

Record 3 1987-12-30

English

Subject field(s)
  • Lathe Work (Machine-Tooling)
  • Machine-Tooling (Metallurgy)
DEF

The diameter of a cylinder bounding the root of an external thread or the crest of an internal thread.

OBS

The minor diameter was formerly known as the root diameter.

French

Domaine(s)
  • Tournage sur métaux
  • Usinage (Métallurgie)
OBS

Diamètre à fond de filet de la partie mâle et diamètre intérieur, donc diamètre de l'alésage, de la partie femelle.

Spanish

Save record 3

Record 4 1985-08-12

English

Subject field(s)
  • Energy Transformation
  • Tidal Power Stations
  • Wave-Energy Power Plants
DEF

... the ratio of the energy extracted by the device to the energy contained in a length of wave crest equal to the diameter of the device.

French

Domaine(s)
  • Transformation de l'énergie
  • Centrales marémotrices
  • Centrales houlomotrices

Spanish

Save record 4

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Features

GCtranslate (available on the Government of Canada network only)

Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: