HOLO-KROME 76044 M3-0.5 X 35mm 소켓 캡 나사 | 육각 드라이브 | 합금강 열 블랙 옥사이드 (100 / 팩)

Having spent years fighting cheap Chinese screws that strip, the precision of these socket heads is a breath of fresh air. The 35mm length seats perfectly in my fixture, and the black oxide finish hasn't shown a hint of wear after a dozen assembly cycles.

I was worried the black oxide would rub off during assembly, but the finish on these M3 screws is holding up perfectly in my jig. The socket drive grabs securely without stripping, and the 35mm length is just right for my precision fixture.

These M3 screws fit perfectly into my 3D printer's hotend mount, and the black oxide coating looks clean against the aluminum. The hex drive bit seated firmly without any stripping, which was a relief for such small fasteners.