My company has been exporting modified truss head screw since 1990,we have rich knowledge and experiances on this product Modified Truss Head Screw :Standard: DIN, ANSI ,BSMaterial: Carbon Steel 1022Diameter: 3.5mm ~ 6.3mmLength: 13mm ~100mm,Point : S Point , Self-drilling Point.Finish: Zinc PlastedPacking: Box, carton, bag, pallet Modified Truss Head Screw