General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 5279-1985
Scope
This standard specifies the head shape of slotted and cross-recessed countersunk head, countersunk head screws and self-tapping screws, and recommends the measurement methods that should be specified in the corresponding product standards.
GB/T 5279-1985 history
1985GB/T 5279-1985 Countersunk head screws--Head configuration and gauging