M6-1 x 100mm 육각 소켓 캡 나사 | 육각 드라이브 | 부분 나사산 | 12.9급 합금강 아연 도금 (100개/팩)

The threading on these M6-1s is clean and consistent across all 100 pieces, which made my precision assembly work go smoothly without any seized or misaligned screws. The zinc plating gives them a solid, uniform finish that looks good in my machinery setup. I've already reordered a second pack for u

Used these to build a custom jig for my drill press and the hex socket drive made installation a breeze with my Allen key. The zinc plating on the alloy steel looks and feels solid, no doubt they'll hold up well in the shop.

I was worried the 100mm length might be overkill for my jig, but the partially threaded design let me set depth perfectly without bottoming out. The zinc plating on these Class 12.9 screws already looks more durable than the black oxide ones I used before.