production modification lengthened tire screw flange plate knurled screws electric car nut after quenching 10.9 grade hardness 生产改装加长轮胎螺杆法兰盘滚花螺丝电动车螺帽淬火后10.9级硬度

silver

12*1.25*14.3*54 12*1.5*14.3*54 12*1.75*14.3*54 14*1.5*14.3*54 14*2.0*14.3*54 9/16-18*14.3*54 1/2-20*14.3*54 3/8-24*14.3*54 12*1.25*14.3*62 12*1.5*14.3*62 12*1.75*14.3*62 14*1.5*14.3*62 14*2.0*14.3*62 9/16-18*14.3*62 1/2-20*14.3*62 3/8-24*14.3*62 12*1.25*14.3*68 12*1.5*14.3*68 12*1.75*14.3*68 14*1.5*14.3*68 14*2.0*14.3*68 9/16-18*14.3*68 1/2-20*14.3*68 3/8-24*14.3*68 12*1.25*14.3*75 12*1.5*14.3*75 12*1.75*14.3*75 14*1.5*14.3*75 14*2.0*14.3*75 9/16-18*14.3*75 1/2-20*14.3*75 3/8-24*14.3*75