1) Standard: DIN , ANSI/ASME, BS, GB, JS, Non-standard. 2) Material: Carbon steel,stainless steel 3) Grade:4.8,8.8,ss304 Technical/Catalog InformationPMS 256 0050 SLVendorB&F Fastener SupplyCategoryHardware, Fasteners, AccessoriesHead Height0.049" (1.24mm)Length - Below Head0.500" (12.70mm) 1/2"MaterialSteelPlatingZincScrew Head TypeSlotted PanheadThread Size2-56TypeMachine ScrewLead Free ...