GB/T 9074.18-2002
Cross recessed pan head tapping screws and large plain washer assemblies-type F-type Z
GB/T 9074.18-2002
Slotted pan head tapping screws and plain washer assemblies-type C
GB/T 9074.18-2002
Slotted pan head tapping screws and plain washer assemblies-type F
GB/T 9074.18-2002
Slotted pan head tapping screw and large plain washer assemblies-type C
GB/T 9074.18-2002
Slotted pan head tapping screw and large plain washer assemblies-type F