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GB/T 37462-2019Locking threads with 30 degree wedge ramp (English PDF)

30°楔形防松螺纹

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 10, 2019

Implementation date

December 1, 2019

Scope

GB/T 37462-2019 is the English-translated version of 30°楔形防松螺纹.

GB/T 37462-2019 is the Chinese standard "Locking threads with 30 degree wedge ramp". Its scope clause reads: This standard specifies the tooth form, tolerance, limit size and marking of a 30° wedge lock thread with a nominal diameter range of 1mm to 39mm.

This standard applies to the anti-loose fastening thread connection. Note. The nominal diameter range of 1mm~4mm is a small diameter wedge-shaped anti-loose thread. Its clauses include terms and codes.

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Document preview — GB/T 37462-2019

National Standard of the People's Republic of China

ICS: 21.040.30
Classification: J 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 terms and codes
3.1 Terms
3.2 Code

1 Scope

This standard specifies the tooth form, tolerance, limit size and marking of a 30° wedge lock thread with a nominal diameter range of 1mm to 39mm.

This standard applies to the anti-loose fastening thread connection.

Note. The nominal diameter range of 1mm~4mm is a small diameter wedge-shaped anti-loose thread.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 192 ordinary thread basic tooth type

GB/T 196 basic thread basic size

GB/T 197 ordinary thread tolerance

GB/T 3934 general thread gauge technical conditions

GB/T 14791 thread terminology

GJB3.1A MJ threading Part 1. General requirements

HB4228 MJ thread ring gauge (MJ1.6×0.35~MJ39×2)

3 terms and codes

3.1 Terms

The terms and definitions defined in GB/T 14791 apply to this document.

3.2 Code

The following codes are applicable to this document.

d --- external thread large diameter

D2 --- external thread diameter

D2p --- plug gauge thread diameter

D2t --- tap thread diameter

D3 --- external thread diameter

D5p --- plug thread (crest) bevel diameter

D5t --- tap thread (crest) bevel diameter

Dp --- plug gauge thread flat top diameter

Dt --- tap thread (crest) bevel large diameter

D --- internal thread (dental bottom) bevel large diameter

D1 --- internal thread crest diameter […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Similar standards

GB/T 15054.1-2018|GB/T 15054.2-2018|GB/T 13576.1-2008|GB/T 13576.2-2008|GB/T 13576.3-2008|GB/T 13576.4-2008

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