M12-1.75×16mm ソケットキャップスクリュー | フラットヘッド六角穴付き | 全ねじ | クラス10.9 合金鋼 熱処理黒色酸化皮膜 (100本/パック)

I needed some high-strength bolts for a jig I was building, and these class 10.9 screws fit perfectly. The black oxide finish gives them a nice, uniform look too.

I used these to bolt down a fixture plate on my mill and the hex socket drive seated perfectly every time, no stripped heads. For 100 pieces at this grade, the black oxide finish looks factory-fresh and they threaded cleanly into tapped holes without any binding.

The thermal black oxide finish on these looks and feels premium, and the hex socket drive makes them easy to torque down without stripping. The threads are perfectly clean and fully formed on every one of the 100 I popped open, so they're ready for jig work right out of the bag.