M6-1 x 55mm 六角頭螺絲 | 10.9級鋼 普通 | 部分螺紋 (1400入/包)

Accurate threads and the hex head seated perfectly with my socket wrench—no stripped corners on these. The 10.9 grade steel feels solid for the price, and having 1,400 in one box means I'm set for a long time.

Used these to bolt down some heavy machinery base plates—the Class 10.9 steel held torque perfectly without stripping. At 1400 pieces to a package, the price per screw is unbeatable for a serious project.

The partially threaded design made alignment much easier during assembly than I expected. These 10.9 steel screws feel solid and the hex head grips the wrench perfectly without slipping.