5/16-18 X 1-1/4" 全狗點內六角止付螺絲 | 合金鋼 (100顆/包)

These set screws bite in perfectly when tightened in a blind hole, and the alloy steel holds up well under repetitive adjustments. Grabbed a pack to secure a few collars on a new build, and they haven’t budged since.

The full dog point tip made seating these set screws much easier in the tight corners of my jig. The hex drive grabs securely without stripping, even when torquing down with a ratchet. A solid, straightforward hardware pack that did exactly what I needed.

Had to adjust some machine guards where a standard set screw would leave too much of a gap—these full dog points seated perfectly into the dimpled surface. The alloy steel feels tough, and the hex socket gave me good leverage even in a cramped space. Exactly what I needed for the industrial setup.