HOLO-KROME 60168 3/4-10 X 3" 소켓 캡 나사 | 플랫 헤드 육각 소켓 드라이브 | 합금강 열처리 블랙 옥사이드 (25개/팩)

The thermal black oxide finish on these screws is exactly what I wanted for my jig setup, they slide into the fixture plate without binding and the flat heads sit perfectly flush. The 3/4-10 threading cut clean with no chips or burrs right out of the package, feels like solid alloy steel that’ll han

For a 3-inch fixture plate on my mill, these socket cap screws seated flush and grabbed tight without any wobble. The thermal black oxide coating is consistently smooth across all 25, and the hex drive held up under torque.

Installed these in a jig I was building, and the flat head seated perfectly flush. The thermal black oxide finish held up well to the torque without galling. Exactly what my tooling setup needed.