10.9Class hexagon socket head cap screw
Supported specifications: M1.4 or higher
Manufacturer: ANSCO, NF, NSN, GOSHO, KKT, TKS, N, etc.
The hexagonal hole has a strict dimensional tolerance,and some manufacturers make t larger than the standard value to make it less slippery.
Material: Structural alloy steel
Hardness: 32-39HRC
Surface treatment: blackening treatment (other surface treatments are available on demand)
Please ask our customer service for  specifications not shown in the following table .