... ; BS-5/32, 3/16, 1/4... 2)carbon steel, stainless steel,aluminium 3)ROHS Compliant; TS-16949(including ISO 9001 round ... /32, 3/16, 1/4,5/16, 3/8MaterialCarbon steel, stainless steel and aluminiumHeadFlat head,small head,countersunk head, flat hexagon headBodyRound ... ; TS-16949(including ISO 9001)About us:Changde Yufeng Fastener Co. Ltd is a high-tech enterprise, has taken the initiative in ...