M10-1.5 X 40mm 套件帽螺絲 | 平頭六角套件驅動 | 全螺紋 | 10.9級合金鋼熱黑氧化物 (200 / 包)

Installing these on a milling fixture and the hex socket drive made torquing them down much easier than a standard hex head. The black oxide finish looks clean and seems durable, plus the 200-count box gives me plenty for future projects.

I used these to repair a jig in my shop, and the class 10.9 alloy steel feels solid enough for heavy-duty clamping. The black oxide finish hasn't shown any rust after a week in a damp garage.

The hex socket drive seated perfectly with my Allen key and the threads cut cleanly into the steel jig plate without any binding. For $200 a pack, these are a solid deal for precision assemblies where you don't want to worry about stripping.