304圆头十字槽带垫钻尾

SUS304 cross recessed truss head self dr

圆头十字钻尾DIN7504（N）

Pan Head Self-Drilling Screw DIN7504N

沉头十字钻尾DIN7504（P）

Countersunk cross drill tail DIN7504 (P)

六角法兰钻尾DIN7504（K）

Hexagon flange drill tail DIN7504 (k)

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