M10-1.5 X 80mm 六角穴付きボルト | 六角穴駆動 | 全ねじ | 12.9級合金鋼 サーマルブラックオキサイド (50本/パック)

These fit perfectly in my milling jig and the black oxide coating seems like it'll hold up well to repeated clamping. The 12.9 grade gives me confidence they won't snap under heavy loads.

Used these to build a heavy workbench and the fully threaded grip held tight even with lots of vibration from the saw. The black oxide finish looks clean and hasn't shown a speck of rust after a week in my damp garage.

Really solid bolts — the hex socket drive makes them easy to torque down in tight jig setups. Used a dozen so far on a heavy fixture and nothing has loosened up.