1/2-20 x 1-3/4인치 소켓 캡 나사 | 육각 소켓 드라이브 | 미국 제조 | 합금강 열처리 블랙 옥사이드 (225개/팩)

The black oxide finish on these screws looks clean and holds up well against shop grime, and the hex socket drive seated my Allen wrench without any wobble. I’ve used about half the box on a pallet jig so far, and every one threaded true.

These hex heads fit perfectly in my jig’s tightening fixture, and the black oxide coating feels like it will resist rust way longer than standard hardware. Already used about half the pack for a heavy press build, and every one threaded clean without any chips or burrs.

Needed a batch of 1/2-20 screws for a heavy-duty tooling project and these hex socket drives seated perfectly with no wobble. The black oxide finish seems tougher than other coated fasteners I’ve used, and the full 225 count means I still have spares left over.