GB/T 9074.1-1988

Cross recessed pan head screws and plain washers assemblies

GB/T 9074.2-1988

Cross recessed pan head screws and external teeth serrated lock washers assemblies

GB/T 9074.3-1988

Cross recessed pan head screws and spring washers assemblies

GB/T 9074.4-1988

Cross recessed pan head screws, plain and spring washers assemblies

GB/T 9074.5-1988

Cross recessed small pan head screw and plain washer assemblies

GB/T 9074.6-1988

Cross recessed small pan head screw and large plain washer assemblies

GB/T 9074.7-1988

Cross recessed small pan head screw and spring washer assemblies

GB/T 9074.8-1988

Cross recessed small pan head screw, plain and spring washer assemblies

GB/T 9074.9-1988

90° Cross recessed countersunk head screw and countersunk serrated lock washer assemblies

GB/T 9074.10-1988

90° Cross recessed raised countersunk head screw and countersunk serrate lock washer assemblies

GB/T 9074.11-1988

Cross recessed hexagon bolt with indentation and plain washer assemblies

GB/T 9074.12-1988

Cross recessed hexagon head bolt with indentation and spring washer assemblies

GB/T 9074.13-1988

Cross recessed hexagon head bolt with indentation , spring and plain washer assemblies

GB/T 9074.18-1988

Cross recessed pan head tapping screws and plain washer assemblies-type C

GB/T 9074.18-1988

Cross recessed pan head tapping screws and plain washer assemblies-type F

GB/T 9074.19-1988

Cross recessed pan head tapping screw and large plain washer assemblies-type C

GB/T 9074.19-1988

Cross recessed pan head tapping screw and large plain washer assemblies-type F

GB/T 9074.20-1988

Cross recessed hexagon head tapping screw with indentation and plain washer assemblies-type C

GB/T 9074.20-1988

Cross recessed hexagon head tapping screw with indentation and plain washer assemblies-type F

GB/T 9074.21-1988

Cross recessed hexagon head tapping screw with indentation and large plain washer assemblies-type C