M12-1.75 X 60mm 內六角低頭螺絲 | 六角驅動 | 部分螺紋 | 10.9級合金鋼熱處理黑氧化物 (50個/包)

Used these to bolt down a new fixture in my workshop and the hex socket drive made installation a breeze with a ball-end Allen key. The 60mm length gave just enough engagement for the aluminum frame, and the black oxide finish hasn't shown any wear after a week of vibration.

Installed these on a jig fixture and the partially threaded design made alignment much easier than fully threaded screws. The black oxide finish looks clean and professional.

Finally, a batch of M12 low head screws that actually seat flush in my jig fixture without needing a counterbore. The 10.9 alloy steel and black oxide finish held up perfectly through a 50-part test run with zero stripping.