M5-0.8×14mm 소켓 캡 나사 | 접시머리 육각 소켓 드라이브 | 전체 나사산 | 클래스 10.9 합금강 열처리 블랙 옥사이드 (800개/팩)

The hex socket drive seated perfectly on my Allen key, and all 800 pieces came out of the box with a consistent, clean black oxide finish. I've used about a hundred so far in my jigs and they thread smoothly without any wobble, exactly what I need for precision work.

I’ve been through a few packs of these for jig builds and the black oxide finish is holding up better than expected, no rust even after some cutting fluid exposure. The hex socket drive seats cleanly every time, and at 800 per box I won’t need to reorder for a while.

They feel substantial in hand, and the black oxide finish on these alloy steel screws held up well without flaking during assembly. I used them for a jig build and every one seated perfectly without any stripped heads.