threaded rods&studs 1.material:carbon steel 2.finish:zinc plated 3.size:M3-M52 4.standard:DIN threaded rods&studs1.material:carbon steel,stianless steel,alloy steel ,brass,bronze,mild steel,etc.2.finish:zinc plated,yelolow zinc plated,blue zinc plated ,black zinc plated,HDG, plain,galvanized,etc.3.size:M3-M524.standard:DIN,ASTM,BS5.class:grade4.8,5.8,6.8,8.8,10.9,12.96.length:1000mm-3000mm7. ...