Countersunk head socket cap screwâ  Standard: Amse b18.3; din7991; iso10642; gb70.3 Size: #0-1-1/2â?�; m3-m20 Material: Carbon steel, alloy steel, stainless steel, brass Grade: Astm a307gr.A, class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 Thread: M, unc, unf Finish: Plain, zinc plated(clear/blue/yellow/black), black oxide, nickel, chrome, h.D.G Packing: Bulk in cartons (25kg max.)+wood pallet or according to customer special demand Application: Structural steel; metal building; oil&gas; tower&pole; wind energy; mechanical machine; automobile: home decorating Equipment: Caliper, go&no-go gauge, tensile test machine, hardness tester, salt spraying tester, h.D.G thickness tester Supply ability: 1000 tons per month Minimum order: 500kgs for each specification Trade term: Fob/cif/cfr/cnf/exw/ddu/ddp Payment : T/t, l/c, etc Market: South&north america/europe/east&south east asia/ australia and etc. Our advantage: One-stop shopping; high quality; competitive price; timely delivery; technical support; supply material and test reports; samples for free Notice: Please lets know the size, quantity, material or grade, surface, if it is special and non-standard products, please supply the drawing or photos or samples to us -