1/2-20 x 3/4" 滾花杯頭內六角止付螺絲 | 合金鋼 (100/包)

The hex socket drive made installing these in a tight lathe fixture much easier than I expected. The knurled cup point grips the shaft firmly without any slippage. Exactly what I needed for this job.

These little screws are perfect for when you need a solid grip in a tight spot—the hex socket lets me get a wrench in there without stripping anything. I've used a dozen already and the knurled cup points haven't slipped once. The alloy steel feels tough enough to trust for the long haul.

Installed a few of these in a machine slide last week and the hex socket drive made getting them tight in a cramped spot way easier. The alloy steel feels really solid, no stripping or galling so far. Exactly what I needed for the job.