HOLO-KROME 86049 M8-1.25 X 30mm 소켓 캡 나사 | 버튼 헤드 육각 소켓 드라이브 | 합금강 열처리 블랙 옥사이드 (100개/팩)

Just finished a small fixture build and these M8s torqued down cleanly without any binding. The thermal black oxide coating is uniform across all 100 pieces, and the button head profile gives a nice low-profile finish on the jig plate. Exactly what I needed for precision assemblies.

Swapped out the cheap hardware on my milling fixture with these, and the black oxide finish holds up way better than zinc against cutting oil. The hex socket drive fits snug without stripping, even after multiple tightens.

Used a pack of these for a jig build in my shop, and the hex drive seated perfectly every time without any stripping. The 30mm length was just right for my 8mm plate stack.