M2.5-0.45 X 20mm 소켓 캡 나사 | 육각 소켓 드라이브 | 풀 스레드 | 클래스 12.9 합금강 아연 도금 (600 / 팩)

I was a bit worried about stripping the hex socket on something this small, but the drive engagement is clean and the zinc coating looks uniform across all 600 pieces. They thread smoothly into my aluminum tooling plates without any gritty feel, and the 12.9 hardness gives me confidence they'll hold

I’ve used these in a few jigs and precision assemblies, and the consistent 12.9 grade hardness really shows when torquing them down. The zinc coating is smooth and uniform, plus the hex socket drive grips perfectly with a 2mm Allen key.

These hold like a dream on my CNC jig fixture, the hex socket drive makes them easy to torque without stripping. Exactly the right thread pitch for my tooling setup.