... ,DIN931,DIN934 2.Bolt size:M3-M22 3Bolt material:Carbon steel 4.Effect:Connection,Fastening Export Hex bolt and nutProducts Details ... : M3-M22 Standard NO.: DIN933,DIN931,DIN934 Material:: Carbon steel,stainless steel Grade: 4.8-12.9 Finish: zinc,black,chrome,nickel ... ,According to the volume to determine the delivery time. Packing: Box, carton or plastic bags, then put on pallets, or according ...