M6-1 x 100mm 六角穴付きキャップスクリュー | 六角穴付き | 半ねじ | 12.9級合金鋼 黒色酸化被膜 (100本/パック)

Threads are clean and the black oxide finish looks uniform across all 100 pieces, which matters when they're visible on a jig. The hex socket drive grips the Allen key without any wobble, and the partial threading makes alignment in deeper holes a lot easier. These are going to hold up well on my to

Finally, some M6 socket cap screws that don't strip out on me. The 100mm length was exactly what I needed for a jig I’m building, and the black oxide finish looks clean and professional. These feel seriously strong compared to the cheap ones I’ve used before.

The 100mm length is exactly right for my jig build, and the hex socket drive seated cleanly with my Allen key. They're stiff out of the box, but the black oxide feels like it’ll hold up fine in dry tooling use. Minor nitpick: the threads stop a bit early, so plan your clamping depth accordingly.