Self-drilling screw Standard: Asme b18.6.4 & sae j78;din7504k;din7504p;din7504n;gb/t15856.4;gb/t15856.5;iso15780 Size: #4(2.8)-1/2";st2.2-st9.5 Material: Carbon steel, alloy steel, stainless steel Length: 10-180mm(3/8â?�-7â?�) Head type: Hex , flat, pan, truss, round, hex washer, oval, pan framing, bugle, fillister Drive type: Phil, slotted, phil & slotted combination, hex socket Screw type: Bsd, csd 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 -