Cold Heading Quality Steel Wire

Cold Heading WireStainless steel is most suitable material to make Bolt, Nut, Tapping screw, machine screw and wood screw etc. In order to eliminate troubles particularly in cold-heading process and to have good shaped thread, cold-heading wire is manufactured under the most adequate condition with the material of best quality. Type of steel & screw(bolt) shapes AISI SUS Cold heading Screw Shapes 304316 304316 Light processing Hexagon & square headed, slotted, round, raised T-head, pan head, counter-sunk screws, bolts & nuts 302HQ(305) XM7305J1 High-power processing Slotted & cross-recessed head tapping, pan, round, binding truss & oval screws, bolts & nuts 384 384 Heavy processing Cross-recessed head tapping, truss & binding screw & nuts 410430434 410430434 Heavy processing Bolts, wood screw, nut, rivets & cross-recessed head screws, tapping screw Mechanical properties Type Class A Class B Tensile Strength Reduction of Area(min, %) Tensile Strength Reduction of Area(min, %) AISI SUS Over dia. 1.6mm to 5.5mm Dia. 0.8mm to 1.6mm Over dia. 1.6mm to 5.5mm Dia. 0.8mm to 1.6mm 302HQ XM7 441-588 490-637 70 461-637 539-686 65 305 305J1 490-637 510-657 70 510-686 559-706 65 304 304 539-686 588-735 70 559-706 637-785 65 384 384 441-588 490-637 70 461-637 539-686 65 316 316 510-657 559-706 70 539-686 58-755 65 410 410 - - - 461-637 539-735 65 430 430 - - - 461-608 539-735 65 434 434 - - - 461-637 539-735 65