
asme b18.6.2 开槽沉头螺钉

盘头螺钉的规定画法内六角圆柱头螺钉,沉头螺钉,05半圆头螺钉,盘头

沉头内六角螺钉hexagonsocketscrews

弹簧垫圈的规定画法六角盖形螺母,紧定螺钉,02六角头螺栓,六角螺母的

gb/t 68-2016 开槽沉头螺钉
asme b18.6.2 开槽沉头螺钉
盘头螺钉的规定画法内六角圆柱头螺钉,沉头螺钉,05半圆头螺钉,盘头
沉头内六角螺钉hexagonsocketscrews
弹簧垫圈的规定画法六角盖形螺母,紧定螺钉,02六角头螺栓,六角螺母的
gb/t 68-2016 开槽沉头螺钉