براغي رأس أسطوانية 1/2-20 × 2 بوصة | محرك سداسي | رقعة نايلون | ملولبة بالكامل | فولاذ سبائكي مؤكسد حراريًا (50/عبوة)

The nylon patch on these screws holds them in place perfectly during assembly, a big help when working on jigs where vibration is an issue. The black oxide finish looks clean and professional on my tooling setup too.

These are exactly the specs I needed for a jig I'm building. The thermal black oxide finish looks nice and seems durable, and the hex drive seated perfectly in my socket wrench.

Bought these for a fixture I'm building and the hex socket drive made tightening them in tight spots a breeze. The black oxide finish looks clean and should resist rust better than plain steel. They threaded in smoothly with no binding or galling.