M4-0.7 x 14mm 소켓 캡 나사 | 버튼 헤드 육각 소켓 드라이브 | 전체 나사산 | 클래스 10.9 합금강 아연 도금 (600개/팩)

The hex socket drive seated perfectly in my driver without any wobble, and the zinc plating looks clean and consistent across all 600 pieces. Threads ran smooth into the aluminum plate, so this batch is solid for our tooling setups.

I needed a reliable batch for a jig I was building, and these M4 screws threaded perfectly into the fixture without any binding. The zinc plating looks clean and seems durable, which is exactly what I wanted for a precision assembly.

The hex socket drives sit flush and grab perfectly with standard Allen keys, so these are working great for my precision assemblies. Class 10.9 alloy steel feels plenty tough for the machinery work I'm doing, and the zinc plating has stayed clean so far.