2"-4-1/2 X 10" 六角頭螺絲 | BD級合金鋼原色 | 部分螺紋 (1 顆/包)

Wrestled these into place on a jig frame, and the hex head gave a solid bite for a socket without stripping. The BD alloy seems tough enough for repeated tightening, though the partial threading means you'll want full rod if you need a long grip.

The partially threaded design made seating these in a deep flange a lot easier than I expected for a 10-incher. The alloy steel finish is plain, but the hex head grabbed cleanly with a socket, and the threads held up without any galling. Solid choice if you need heavy machine fasteners that just wor

Had to torque these to nearly 400 ft-lbs on a conveyor spindle, and the hex head held perfectly without any rounding. The partial threading gave just the right grip for our application.