M4-0.7 x 22mm 소켓 캡 나사 | 플랫 헤드 육각 드라이브 | 전체 나사산 | 합금강 클래스 12.9 아연 도금 (400/팩)

Hex socket drive sits deep and clean, so my Allen key grabbed every one of these 400 without a single stripped head. The zinc plating held up fine during a long afternoon of fitting brackets, and the 12.9 grade feels rock solid in the hand. Exactly what I needed for a tight production run.

Finally got these installed on a few jigs and the hex socket drive made tightening them really easy. The zinc plating looks consistent and feels solid, should hold up well in my shop.

I was a bit skeptical about buying 400 at once, but every single screw has a clean, sharp thread that threads smoothly into my jigs without any binding. The zinc plating looks consistent across the whole batch, which is a relief for a project where I need them all to match.