Bolt Products description: 1)material of screws: mild steel(1010, 1015, 1020, 1025), middle carbon steel(1030, 1035), high carbon steel (1040, 1045, 1050, 1055), stainless steel(202, 302, 304), alloy steel, brass 2)finish: chrome plated, zinc plated, nickel plated, silver plated, gold plated... 3)produce according to customers' drawings or samples 4)supply with fastener including nut, washer, rivet, pin, bolt and unstandard fasteners 5)standard: din, ansi, jis, bs, iso 6)unit price/payment: t/t, l/c at sight 7)origin: china 8)packing: sea worthy or accoring to customer Size: diameter: m4~m48 Length: 10mm~480mm