... :ISO14001:2004 ISO9001:2001 SGS Specifications Truss head hex socket machine screw Xiamen Haixingcheng Metal Products Co., Ltd. is a fastener ... , BSW, ASMEGrade3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9 etc.SizeM0.8~M12MaterialStainless, Steel,Brass, Steel,Bronze, Iron,Aluminum ...