1/2-20 X 3" 杯端止付螺絲 | 合金鋼 (50/包)

These arrived well-packed and the hex socket drive made cinching them down in a tight spot a breeze. The alloy steel feels plenty sturdy for the torque I needed, and the threads cut clean without any binding.

The cup point tip really grips the material as you drive it in, which kept my work from wandering during assembly. All 50 screws in the pack had cleanly cut threads and seated perfectly with my hex key.

The hex drive handled my torque wrench perfectly for securing a heavy-duty machine guard, and the cup point bit firmly into the alloy steel shaft without slipping. Exactly the grip I needed for a tight, permanent hold in a confined space.