1/2-20 X 2" براغي ذات رأس مقبس | محرك سداسي | صنع في الولايات المتحدة | فولاذ سبائكي أكسيد أسود حراري (350 / عبوة)

Threaded every single one of these into my fixture plates without a single jam — the hex socket drive bites perfectly and the black oxide finish gives them a nice, uniform grip. For a 350-count box, the alloy steel feels plenty sturdy for jigs and precision assemblies.

The black oxide finish on these screws is holding up perfectly in my jig setup, no rust after a week of coolant spray. They threaded cleanly into my tapped holes without any binding.

These bolts have a really nice finish to them, the thermal black oxide coating looks even and professional. I used them on a jig I'm building and the hex drive seated perfectly without any stripping. For the price, getting a full 350 pieces of US-made alloy steel is a steal.