hex head bolts 1.Finish: z.p,h.d.g,p.l 2. Material : stainless and carton steel hex head bolts1. ... plated , h.d.g , plain , yellow zinc plated , white zinc plated ...2. Material : stainless steel and carton steel grade 4.8 ,grade ... /box ,pcs/ctn , pcs/pallet polybag : pcs/bag .and etc... 4.Function :fastening two parts with relatived positions or other else ...