Detailed Product Description hex head bolt,bolt,hex bolt,zp din931/933,size:from:M5 to MA52Length:8 to 1200mmifi hex machine bolt,tap bolt and cap screwsize:from1/2 to 1-1/2 inchessurface:zp,yzp,black zinc plated.HDG,Dacromet(200 hours to 2000hours)material:stainless steel,carbon,alloy steelgrade:din 4.8,5.8,6.8,8.8,10.9 (ifi)A307 Grade2,grade5,grade8,B7