tePacking:CartonItem:China FastenerApplication:BuildingPackaging Details:Small box, carton, pallet, nylon bag, for self drilling screwProduct Descripion1. Grade: C10222. Size: ST3.5, ST3.9,ST4.2,ST4.8, ST5.5,ST6.33. Length：13-120mm4. Standard: DIN?5. Certification: ISO9001, CEProduct Name:Self drilling screwMaterial: Carbon steelUsed:building industry machinery