... : ANSI/ASTM, DIN, and BS 2)Property class: 4.8, 5.8 and 8.83)Material:carbon steel,stainless steel-200,201,202 ... of threaded rod: Grade3.6,4.6,4.8,5.6,6.8,8.8,9.8,10.9,12.9,etcCarbon steelGr.B,Gr ... .002mmCylindricity0.003mmRoughnessRa0.32Straightness0.01/200mm DIN975 Zinc plated grade 4.8 M20 full thread rod,all thread rod anchor,ISO9001