六角頭螺絲 2"-4-1/2 x 5-1/2" | 合金鋼 BD 級 無鍍層 | 全螺紋 (1 / 包)

The hex head on these cap screws gave my socket wrench a solid, no-slip grip during a heavy equipment repair. Threads ran smooth all the way through the nut, and the alloy steel feels tough enough for repeated use. Exactly what I needed for that kind of load.

Used these for reassembling a press at work, and the fully threaded length held tight under heavy load. The hex head gave a solid grip with the socket, no stripping even at high torque.

The fully threaded length is a lifesaver—I didn’t have to fiddle with spacers to get a snug fit on my equipment frame. The hex head grabbed my socket cleanly with zero stripping, and the alloy steel feels rock-solid for the load.