... are made by stainless steel. 2.size:standard or non-standard 3.function:fastening and buffering 1.product ... pan head combined screw fastenersMaterialStainless steel,carbon steel,or as your demandFinishZinc,colourzinc,nickel plated,environmentally friendly. ... StandardDIN, ISO,DIN,JIS, BSW, ANSI or as your requestPacking detailGeneral export packageMOQ100000piecesComponent partsA screw, ...