براغي رأس مقبس مقاس 1/4-20 × 5/8 بوصة | محرك مقبس سداسي | رقعة نايلون | خيط كامل | فولاذ سبائكي مطلي بأكسيد أسود حراري (200 / عبوة)

The nylon patch locking feature is a nice touch—these screws stay put even with some vibration on my jig. I ordered two packs for a fixture build and every single one threaded cleanly into tapped holes. The black oxide finish gives them a clean, professional look that matches my other hardware.

These are holding up perfectly on my drill press jig, and the black oxide finish hasn't scratched off during assembly like cheaper screws I've used. The hex socket drive made it easy to torque them down in tight spaces.

The nylon patch is a great touch—these screws hold their torque even after a few rounds of adjustments on my fixture. The black oxide finish looks clean and gives them a solid, durable feel that I wasn’t expecting at this price.