CNS 4556-1981
Hexagon socket thin head cap screws
CNS 4558-1981
Hexagon socket countersunk head screws
CNS 3932-1998
Hexagon socket head cap screws
CNS 3932-1998
Hexagon socket head cap screws-Knurled head
CNS 4555-1981
Hexagon socket head cap screws M1.4 to M2.5
CNS 4557-1981
Hexagon socket head cap screws; shallow head with pilot recess for wrench key