... 8 2.all kinds of furface finish DIN934 hex nuts product namehex nutsSizeM6 (1/4") to M72 (3")class5 6 8 10 ... ,GR.2 GR.5 GR.2HMaterialhigh quality carbon steel (C1015,C1035 ... ,4033,4034,4035Others :AS1112,BS1083,BS1768,IFI D-5,D-8,UNI5587,SQUARE NUTS,TEE NUTSCertificationISO9001:2008Packingcarton,pp bags ,gunny,pallet or ...