... by IQC,IPQC, OQC, QA.4) supply special screws, nuts, bolts, rivets,studs,washers,standoffs,spacers,pins, shafts,and standard ... by IQC,IPQC, OQC, QA.4) supply special screws, nuts, bolts, rivets,studs,washers,standoffs,spacers,pins, shafts,and standard ... . 1. Material: carbon steel; SS304 2. Finish: ZP, YZ, Black, HDG 3. Standard: DIN934, ANSI B 18.2.2 details informationFastener remains flush with both ...