Diameter:M20~M48
Length:20mm~6000mm
Grade:12.9,10.9,8.8,4.8
Surface finished:self color ,black ,zinc plate ,HDG...
Material :ally steel ,the carbon steel
We specially manufacture the hex bolt.if you are initerested in our product ,pls cintacy us by email or fax to us or call us.We warmly welcome the customers from home and abroad to build business relationship with us .