M14-2 × 100mm 소켓 머리 볼트 | 평머리 육각 소켓 구동 | 부분 나사산 | 클래스 12.9 합금강 아연 도금 (25개/팩)

Used these to build a heavy-duty jig for my workshop, and the flat head hex socket made installation in tight spots much easier than I expected. The zinc plating seems durable so far and the partial threading gave just the right grip depth for my steel plates.

The threading on these is cut clean and the zinc plating looks even across all 25 pieces—no flaking or rough edges out of the bag. I used them to hold a jig together and they torqued down smoothly without any galling. Solid hardware for the price.

The hex socket drive seated perfectly with my Allen key, and the zinc plating has a clean, even finish that should resist rust in the shop. Threads ran smooth into steel without any binding. These feel solid enough for my fixture build, no complaints at all.