Features:
1) Material: 20MnTiB 35VB
2) Property Classes: 10.9s
3) Tension Strength: 1040??1240 Mpa
4) Hardness: HRC 33--39
5) Type: Hex head
6) Diameter: M16-M64mm
7) Length: 50-170mm
8) Surface Treatment: Dichromate, galvanization, black, plain
9) Standards; GB1228-1231, GB3632, ASTM A325, ASTM A490, ASTM A325M, ASTM A490M, ASTM F1852, DIN 6914, in grades 10.9, 12.9.
10) USE: Our high strength bolt with nut and washers are mainly used for structural connections, such as the construction of steelworks, railway, bridge, power plant, boiler station and etc.