M12-1.75 x 190mm 六角頭螺絲 | 10.9級鋼 鍍鋅 | 部分螺紋 (25個/包)

Installing these on a jig fixture—the partial threading grabbed perfectly in the first few turns, and the Class 10.9 steel feels rock-solid under load. No stripping or galling even with a high-torque impact driver.

Used these on a heavy equipment assembly job and the hex head handled the torque wrench perfectly without slipping. The zinc plating gives them a clean, corrosion-resistant finish that I appreciate.

The partially threaded design made installation much easier since I only needed threads where the nut goes. Grabbed a socket on my impact driver and these drove in cleanly without any binding.