... years manufacturer 3.SGS,Rohs certificatione 4.free sample socket head cap screwsMaterial:stainless steel,steelStandard:ISO,DIN,BS,JIN,ASTM ... buyer's drawingtrade term: Ex works,C&F,CIF,FOBsample lead time: within 7 daysscrew slot form:philips,phil-slot,pozi ... us know without any hesitationContactAmy fax:86-769-86734870 socket head cap screws