... carbon steel,iron and Other Special Materials:Lucite / Nylon / Bakelite / etc. 2) Precision: According to ... Zinc PlateSurface treatment:Heat TreatingType: Plum blossom nylon HEADColor:Zinc WhitePacking:CartonItem:China FastenerApplication:BuildingPackaging ... Details:Small box, carton, pallet, nylon bag, for self drilling screwProduct Description1. Grade: ...