M2-0.4 X 5mm 소켓 캡 나사 | 접시머리 육각 소켓 드라이브 | 전체 나사산 | 12.9급 합금강 열처리 블랙옥사이드 (400개/팩)

The hex socket drive grips the Allen key firmly, so even on tiny M2 screws I never stripped a head during assembly of my jig. The thermal black oxide finish looks uniform across all 400 pieces, and the 12.9 grade gives me confidence they’ll hold up under repeated torque.

These M2 screws are a perfect fit for the precision assemblies I'm working on—the hex socket drive grabs the driver securely without any wobble. The black oxide finish looks clean and seems durable so far. Definitely what I needed.

Bought these for a jig I’m building and the hex socket drive seated perfectly with a 1.5mm driver, no wobble. The black oxide finish looks even and the threads are clean on every one of the 400 I checked.