M20-2.5 x 170mm 육각 머리 캡 나사 | 클래스 10.9 강철 아연 도금 | 부분 스레드 (10개/팩)

Used these to mount a heavy jig frame, and the partially threaded design let me get full thread engagement without bottoming out. The zinc plating has held up well in my shop so far, no rust after a week.

Needed some sturdy bolts for a press jig I’m building, and the partial threading on these M20s makes them easy to snug deep into a tapped hole. The hex head grabs nicely with a socket, and the zinc plating looks clean enough to stay rust-free in my garage.

These are beefy screws for heavy equipment; the hex head accepts a socket wrench perfectly for torquing down. The 170mm length and partial threading let me fasten a thick bracket with a spacer, and the zinc plating looks like it’ll hold up well on the shop floor.