GB/T 99-1986
Slotted round head wood screws
GB/T 100-1986
Slotted countersunk head wood screws
GB/T 101-1986
Slotted rasied countersunk head wood screws
GB/T 5282-1985
Slotted pan head tapping screws-type C
GB/T 5282-1985
Slotted pan head tapping screws-type F
GB/T 5283-1985
Slotted countersunk head tapping screws-type C
GB/T 5283-1985
Slotted countersunk head tapping screws-type F
GB/T 5284-1985
Slotted raised countersunk head tapping screws-type C
GB/T 5284-1985
Slotted raised countersunk head tapping screws-type F
ISO 1481-1983
Slotted pan head tapping screws-type C
ISO 1481-1983
Slotted pan head tapping screws-type F
DIN 7971-1990
Slotted pan head tapping screws-type C
DIN 7971-1990
Slotted pan head tapping screws-type F
ISO 1482-1995
Slotted countersunk head tapping screws-type C
ISO 1482-1995
Slotted countersunk head tapping screws-type F
DIN 7972-1990
Slotted countersunkhead tapping screws-type C
DIN 7972-1990
Slotted countersunkhead tapping screws-type F
ISO 1483-1983
Slotted raised countersunk head tapping screws-type C
ISO 1483-1983
Slotted raised countersunk head tapping screws-type F
DIN 7973-1990
Slotted raised countersunk head tapping screws-type C