7/16-14 X 3" 杯形點內六角螺絲 | 合金鋼 (100 / 包)

The hex socket drive made it easy to torque these into a tight spot on my press brake. They threaded smoothly and held firm once seated, which is exactly what I needed.

Installed these in a custom jig to lock a cam follower in place—the cup point grips really well without stripping the shaft. Hex socket drove in clean even at the 3-inch length, and the alloy steel feels plenty tough.

Perfect fit for securing a pulley on a custom shaft — the cup point bit into the metal without stripping. All 100 screws had clean threads and consistent hex sockets across the batch.