GB/T 4263-1984
90 degree countersinks with parallel shanks and solid pilots

Be replaced

Standard No.

GB/T 4263-1984

Language

Chinese

Release Date

1984

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Replace By

GB/T 4263-2004

Lastest

GB/T 4263-2004

Scope

This standard is applicable to countersinking drills with straight shank 90° tapered surface with a guide post for processing countersunk head seats of countersunk screws specified in the standard GB152-76 "Fastener Through Hole and Countersunk Seat Dimensions".

GB/T 4263-1984 history

• 2004 GB/T 4263-2004 Countersinks,90°,with parallel shanks and solid pilots
• 1984 GB/T 4263-1984 90 degree countersinks with parallel shanks and solid pilots