M20-2.5 X 130mm 六角ボルト | クラス8.8鋼 無処理 | 部分ねじ（10個入）

The hex head on these M20 bolts gives a solid grip with a socket wrench, and the 130mm length was just right for my equipment assembly. The partially threaded design made alignment easier than I expected.

These fit perfectly on the M20 studs I'm using for a jig build, and the hex head made torquing them down with a socket wrench effortless. The 8.8 steel feels solid enough for heavy equipment, and the partial threading gave just the right amount of grip.

The threading is clean and the hex head grips a socket without any wobble, which made torquing them down on a jig frame pretty satisfying. For the price per piece, I'd call these a solid buy for heavier assembly work.