براغي رأس مقبس مقاس 5/16-18 × 1-1/2" | رأس مسطحة بمحرك مقبس سداسي | حبيبة نايلون | ملولبة بالكامل | فولاد سبائكي مؤكسد أسود حراريًا (100 / عبوة)

The black oxide finish on these screws looks great and seems to resist rust better than the plain steel ones I had before. The hex socket drive makes them much easier to tighten in tight spots on my jig.

I've used a lot of socket cap screws for jigs and fixtures, and the hex socket drive on these is machined cleanly enough that my Allen keys grip without any wobble. The nylon pellet locking feature is a nice touch for keeping adjustments from backing out on vibrating equipment, and a hundred of them

The black oxide finish on these screws is a nice touch, no glare under work lights. They threaded cleanly into my tapping fixture without any binding, and the nylon pellet locks them solidly in place.