1/2-13 x 1-3/4" 滾花杯頭內六角止付螺絲 | 合金鋼 (25顆/包)

Needed these for a jig I'm building and the hex socket drive made all the difference in getting them torqued down in a tight spot. The alloy steel feels plenty sturdy for the money, and the knurled cup point seated firmly without walking. Pack of 25 should last me a good while.

The knurled cup point grips the shaft way better than standard setscrews, so I don’t have to worry about it backing out under vibration. These alloy steel ones torqued down clean with a hex key, and the whole package arrived exactly as counted.

Finally got these installed to hold a jig together and the hex socket drive made tightening them in a cramped spot much easier than I expected. The alloy steel feels solid and the knurling gives a good grip.