M8-1.25 x 12mm 內六角螺絲 | 低頭內六角驅動 | 全牙 | 10.9級合金鋼 熱處理黑氧化 (100顆/包)

Installed these in a jig for a production run and the black oxide finish held up nicely against metal shavings and coolant. The low head profile gave me just enough clearance under a tight cover plate.

I needed low-profile metric cap screws for a tight jig clearance and these 12mm low heads fit perfectly with no binding. The hex socket drive engaged cleanly and the black oxide finish looks uniform across all 100 pieces. They threaded smoothly into tapped holes without any galling.

The black oxide finish on these M8s is genuinely tough—I've had them in and out of a fixture multiple times and there's zero wear on the coating. The low head profile clears my tight spacing without any grinding. Exactly what a jig build needs.