CNS 4557-1981
Hexagon Socket Head Cap Screws Shallow Head with Pilot Recess for Wrench Key (English Version)

Standard No.

CNS 4557-1981

Language

Chinese, Available in English version

Release Date

1981

Published By

Taiwan Provincial Standard of the People's Republic of China

Latest

CNS 4557-1981

Scope

This standard applies to general hexagonal socket short-head screws with hexagonal wrench guide holes.

CNS 4557-1981 history

• 1981 CNS 4557-1981 Hexagon Socket Head Cap Screws Shallow Head with Pilot Recess for Wrench Key