براغي رأس مقبس 5/16-24 × 1/2" | محرك مقبس سداسي | رقعة نايلون | ملولبة بالكامل | فولاذ سبائكي مؤكسد حراريًا أسود (100 / عبوة)

The nylon patch on these screws holds them in place nicely under vibration, which is exactly what I needed for a jig that sees heavy use. They threaded cleanly into tapped holes without any binding, and the black oxide finish looks good on the workbench.

Used a set of these for a precision assembly jig and the black oxide finish looks great and resists scratching. The hex socket drive seated perfectly without any stripping, and the nylon patch held them snug during vibration testing. Exactly what I needed for a clean, repeatable build.

The nylon patch on these screws gives a nice extra grip during assembly—makes me feel more confident they won’t loosen over time. I put them into a jig fixture and they threaded smoothly with no binding. Exactly what I needed for the job.