Socket Head Cap Screw

Class 8.8
Materials 10B33. 10B21(Carbon steel)
Tensile Strength(min) 880 N/ mm2
Hardness HRC22-32

 

Class 12.9
Materials SCM435
Tensile Strength(min) 1220 N/ mm2
Hardness HRC39-44

 

Class 14.99
Materials SCM440 . SNCM439
Tensile Strength(min) 1440 N/ mm2
Hardness HRC40-49

 

Class A2
Materials 302HQ
Tensile Strength(min) *
Hardness *


Hexagon Socket Set Screws:

According: DIN913. 914. 915. 916
Material: SCM435
Hardness: HRC45-53
Surface plating: Black oxide
Point of tail:

cup point(916)
dog point(915)
flat point(913)
cone point(914)