M12-1.75 X 70mm 內六角螺絲 | 六角驅動 | 全螺紋 | 12.9級合金鋼 熱處理黑色氧化 (100/包)

Had to replace some bolts on a milling jig and these 12.9 grade screws were exactly what I needed — the black oxide finish helps them resist chips and coolant. They threaded in smooth with just a hex key, no binding at all through the full 70mm length.

These screws held my press fixture together perfectly; the black oxide finish adds a nice grip for the hex wrench. No stripped threads or bending under heavy clamping loads.

Exactly the right length for the jig I was building, and the black oxide finish looks clean and professional. The hex socket drive made installation a breeze with my allen key.