cap screw 1.Materail:stainless steel,carbon steel 2 ... 3.SGS,Rohs certificatione 4.free sample socket head cap screwsMaterial:stainless steel,steelStandard:ISO,DIN,BS,JIN,ASTM ... phosphated, grey phosphated, nickel platingQualityBe affordable but of very high qualityPackingAS you requiredDelivery10-15 daysPaymentTT 30% deposit and 70% ... any hesitationContactAmy fax:86-769-86734870 socket head cap screws