Our featured products!!! Widely used in daily life and construction. Easy to use and control. Can be used in less than 1.5mm steel plate Material:c1022 Standard:din Head:bugle Drive:phillips Thread:fine/coarse Point:sharp point Finish:black/grey phosphated, white/yellow/blue Zinc Diameter:m3.5-4.8(as required) Length:13-150mm(as required) Delivery detail:general 20-25days for one full Container Payment:l/c, t/t, western union Feature:black(gray)phosphate, white(yellow/blue) Zinc; with drilling point, bugle head, Phillips drive, coarse/fine thread, Hardened Usage:mainly used in lightgage steel joist and Plasterboard connection. Widely used in Industry, such as construction, decoration, Doors and windows, furniture and so on.