Material | Mid/low carbon steel / Alloy steel |
Size | Customized, mainly produce size M24-M56 |
Grade | 4.8/5.6/5.8/6.8/8.8/10.9 or Gr2,Gr5,Gr8 |
Processing | Hot forge + heat treatment |
Standard | ASTM/DIN/GB |
Testing | hardness test, roughness test, tensile test |
Equipment | CNC machine, automatic machine, thread rolling machine, tapping drilling machine |
Surface treatment | Black oxide |
MOQ | 20 pieces |
Package | wooden case and pallet or as per customers request |
Producing ability | about 1500Ton/Month |
Mill bolt widely applied in heavy machine component, structural parts (cement, mining and power industry.)Good at abrasive resistant.
Bolt + hex nut / flat washer / spring washer / rubber ring
We support OEM service .Drawings and samples are available.
Skype:jessy_vili
Zcopper(at)yahoo(dot)cn
Some kinds of drawings as follows:




