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

Precise Tolerances we can do

1.Shaft diameter below 6mm and maximum pore size tolerance up to 0.003mm,
2.Shaft diameter larger than 6mm and pore size tolerance is 0.005mm,
3.Linearity below 100mm distance etc, tolerance is up to 0.005mm
4.100mm or more distance linear tolerance is up to 0.01mm
5.A form tolerance is up to 0.003 - 0.005mm
6.Position tolerance is up to 0.01mm.