定制开尾圆柱销外螺纹销b878螺尾柱销一字开口销开槽圆柱销子m4m5m20

gb881 螺尾锥销

螺尾锥销iso8737-1986

m4m5m6m8m10m12m16m20 gb878-1986开尾圆柱销外螺纹销轴圆柱销子 ====

gb878螺尾柱销一字开口销/圆柱销子/开尾圆柱销/外螺纹销m4/5/6/8