M8-1.25 x 55mm 六角頭螺絲 | 等級10.9 鋼 素面 | 部分螺紋 (700顆/包)

Grabbed a box of these for a repair job and the 10.9 hardness really shows—they torqued down without stripping. The partial threading made alignment easier than fully-threaded ones I've used before. Solid value for the quantity.

Finally found bolts with enough thread engagement for a steel frame I was building—the partial threading on these 55mm M8 screws is perfect for clamping down thick brackets. Over 700 in a pack means I won’t run out mid-project, and the hex heads grip my socket wrench without slipping.

Needed some heavy-duty fasteners for a steel frame build, and these M8 hex heads fit the bill perfectly. The 10.9 grade feels seriously tough, and the partial threading gave me just the right grip depth without bottoming out.