7/8-14 x 8" 소켓 캡 나사 | 육각 소켓 드라이브 | 부분 나사산 | 합금강 열처리 블랙 옥사이드

The partial threading on these 7/8-14 x 8" cap screws made aligning them in my jig a breeze, and the hex socket drive seated perfectly with my allen key. They feel solid and the black oxide finish looks clean on the tooling. Exactly what I needed for a heavy-duty fixture.

The black oxide finish is holding up nicely after a week of clamping and unclamping on my milling fixture, and the hex socket drive made torquing them down to spec a breeze. Threads engaged smoothly right out of the box, no binding or galling. These feel solid enough for daily shop abuse.

Used these to build a custom jig, and the hex socket drive made installation a breeze even in tight spaces. The thermal black oxide finish feels more robust than standard black oxide I've used before.