براغي رأس أسطوانية بمقبس سداسي 5/16-24 × 5/8" | محرك مقبس سداسي | رقعة نايلون | ملولبة بالكامل | فولاذ سبائكي مؤكسد أسود حراريًا (100 / عبوة)

The black oxide finish feels robust and gives them a quality look, and they threaded smoothly into my steel jig without any binding. I can already tell these will hold up well to repeated use in my shop.

The nylon patch on these screws held tight after a few test fits in my tooling fixture, so no need for Loctite. They threaded smoothly into tapped holes without any binding, and the black oxide finish looks clean.

The black oxide finish on these screws makes them look great in my jig setup, and the nylon patch is a nice bonus for holding them in place. They threaded smoothly into my tooling fixture without any binding.