براغي رأس مقبس 1/2-12 × 2-1/4 بوصة | محرك مقبس سداسي | خيط جزئي | فولاذ سبائكي أسود حراري (50 / عبوة)

The black oxide finish on these socket cap screws handled my shop's oily environment without a speck of rust. They fit perfectly into the tapped holes on my new press fixture, and the hex drive made installation quick with a ball-end Allen key.

The black oxide coating on these screws feels much more durable than standard zinc plating, and the hex socket drives cleanly without stripping. Used them to secure a heavy-duty tooling fixture, and they held perfectly under pressure.

Installed these on a jig I’m building for a steel fab project, and the hex socket fit like a glove, no wobble. The partially threaded design saved me from grinding down a fully threaded bolt—exactly what I needed.