GB/T 4258-2004

Active

Parallel shanks countersinks for angles60°、90°and 120° inclusive

60°、90°、120°直柄锥面锪钻

Standard Type

GBT

ICS

25.100.30

CCS

J41

Status

Active

Issue Date

2004-02-10

Implementation

2004-08-01

Centralized Committee

中国机械工业联合会

Issuing Authority

中国机械工业联合会

Application Summary AI generated

This Chinese standard specifies the dimensions, tolerances, and technical requirements for parallel shanks countersinks with included angles of 60°, 90°, and 120°. It is applied in manufacturing and machining industries for producing countersunk holes in metal or other materials, ensuring proper seating for flat-head screws or rivets during assembly and fabrication processes.

Related Standards

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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.