M8-1.25 X 25mm 소켓 캡 나사 | 육각 소켓 드라이브 | 전체 나사산 | 12.9급 합금강 열처리 블랙 옥사이드 (400개/팩)

Installed a full batch of these into a jig plate I’m building, and every single one seated perfectly without any binding. The hex socket drive grips the Allen key tightly, so I can really torque them down without stripping.

The thermal black oxide finish looks properly done, not just cosmetic—these have that deep, even coating that resists the oily grime in my shop. The threads are clean and the full-thread length made seating them in my jig plates effortless.

The hex socket drive seated perfectly on my Allen key with zero wobble, and all 400 pieces came out of the box clean and uniform. I've used about fifty so far on a jig build, and the threads engage smoothly every time. These are the real deal for precision work.