12.9 grade Carbon steel DIN 912 hex screw
Head type: Hexgon socket screw
Heap Shape:Cup point/Pan head/Allen head ect.
Material:Carbon steel,Stainless steel,Nickel plating.ect.
Grade:Class 4.8, Class 8.8, Class 10.9, Class 12.9,etc.
Standard: GB,DIN,JIS,BSW,ANSI,ISO & non-standard products
OEM : Support