Materials: Q235,45#, 40Cr, 42CrMo,35CrMo
Diameter: M3-M76 or as your request
Surface: plastic-spray, zinc-plated, black oxide or as your requested
Grade: 4.8,8.8, 10.9, 12.9
OEM and ODM orders are welcome
Packing: in bulk, 15-25kg per carton, then pallet