... bolts 1.ISO,ANSI,CE,DIN,BS& non-standard fastener supply 2.ROHS is capable 3.Grade:4.8 ,6.8 ... quality iron,such as 1022,1018,1010,1008,1015...Medium carbon steel are 35k,45#,10B21,1035,CH38F,1039,40ACR...Alloy ... nonstandard parts according to your drawings,samples,detailed descriptions(we can provide drawing you want ).Service is continuing till after sales and ...