براغي ذات رأس مقبس 7/16-14 × 2-1/2 بوصة | محرك سداسي المقبس | رقعة نايلون | ملولبة جزئيًا | فولاذ سبائكي مؤكسد أسود حراري (50 / عبوة)

The nylon patch is a nice touch—these screws hold their position through vibration without needing thread locker. Finish is even and the hex socket drives cleanly with no stripping, even after a couple of torque cycles.

The black oxide finish came out of the package looking clean and uniform, no flaking or residue after I torqued them into a jig fixture. Thread engagement felt precise all the way down, and the hex socket seated without any wobble. Just what I needed for the assembly line.

I used these for a jig I'm building and the hex socket drive made seating them much easier than a standard hex head. The black oxide finish looks clean and seems like it will resist rust in my shop environment. Only minor gripe is I wish the package included a few extra washers, but for the price th