براغي ذات رأس أسطواني مقاس 5/16-24 × 5/8 بوصة | محرك سداسي | حبيبات نايلون | ملولبة بالكامل | فولاذ سبائكي مع أكسيد أسود حراري (100 / عبوة)

I needed some quality screws for a fixture assembly, and these fit the bill perfectly. The nylon pellet is a nice touch, it locks tight without loosening up under vibration.

The thermal black oxide finish looks even better in person than in the photos, and the hex socket drive seated my Allen key perfectly without any wobble. Used a dozen of them on a jig build this weekend and every single one torqued down clean and held tight. Seems like a solid batch for the price, a

The thermal black oxide finish gives these a clean, uniform look that hasn't chipped during assembly on my jigs. The nylon pellet holds tight under vibration, and the hex socket drive seated perfectly with my Allen key right out of the bag.