HOLO-KROME 86440 #10-24 X 2-1/4" 소켓 캡 나사 | 육각 소켓 드라이브 | 합금강 열처리 블랙 옥사이드 (100 / 팩)

Got a full box of these for a fixture assembly, and the black oxide finish is honestly the star—uniform and tough. The socket drive seated cleanly in my hex wrench with zero stripping, and the alloy steel feels plenty rigid for precision work.

I needed some longer screws for a jig I was building, and these #10-24 x 2-1/4" socket caps fit the bill perfectly. The hex drive held up well under the wrench torque without stripping.

The black oxide finish on these screws gives them a nice, even look and seems to resist scratches well during assembly. I used them to secure a steel bracket for a small jig, and the hex socket drove smoothly without any cam-out. They’re a solid choice for precision work where you need a clean, flus