M2-0.4 X 5mm 소켓 캡 나사 | 육각 소켓 드라이브 | 전체 나사산 | 12.9 합금강 열처리 블랙 옥사이드 (600개/팩)

I’ve been using these M2 black oxide screws in my jig builds, and the hex socket drive lets me torque them consistently without cam-out. Great value for 600 pieces, especially for precision assemblies where fit matters.

Finally, some M2 screws that don't strip on the first turn. The black oxide coating seems consistent across all 600 pieces, and they fit perfectly into my 3D printer's tooling jig.

Finally, a bulk pack of M2 screws that actually has consistent threading and a proper hex socket—no stripped heads on the first use. The black oxide finish looks clean and feels durable for small jig builds.