m16螺母图纸,m16螺母尺寸图图纸

m2m3m4m5m6m8m10m12m14m16m18m27-m30六角螺母平垫片弹垫圈高强度螺丝
而且锌层厚薄不均匀,影响了螺纹件的配生产销售m20镀彩法兰螺母,m16
304不锈钢法兰螺母m3m4m5m6m8m10m12m16m20六角防滑防
m3m4m6m8m10m12m16m18m20gb923黄铜盖形螺母螺帽半圆球型装饰螺丝 m14
六角螺母c级