M10-1.5 X 55mm 內六角螺絲 | 低頭內六角驅動 | 部分螺紋 | 10.9級合金鋼 熱處理黑色氧化 (100 個/包)

Finally a batch of M10 bolts that actually have consistent thread depth across all 100 pieces; the low head profile made all the difference for my jig's tight clearance. Exactly what I needed for a tooling frame assembly.

Installed these on a press tool this morning and the partial threading made alignment noticeably easier. The black oxide finish looks clean and professional.

Bought these for a jig fixture on my mill, and the 55mm length with the partial thread gave just the right grip depth. The hex socket drive felt solid with no stripping, even torqued to spec. Exactly what I needed for precision assembly work, no complaints.