TERMIUM Plus®

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

MINOR DIAMETER [2 records]

Record 1 2017-10-31

English

Subject field(s)
  • Metrology and Units of Measure
  • Pipes and Fittings
DEF

The length of line which passes through the center of a hollow cylindrical or spherical object, and whose end points lie on the inner surface of the object.

CONT

In the measurement of pipe diameters, the inside diameter "ID" is that of the interior circle ...

CONT

Because lengths of pipe are joined by external-diameter couplings threaded by standard tools, an increase in the wall thickness can only be obtained by decreasing the internal diameter.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Tuyauterie et raccords

Spanish

Campo(s) temático(s)
  • Metrología y unidades de medida
  • Tuberías y accesorios
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Record 2 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

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