براغي كاب بمقبس مقاس 3/8-16 × 1-3/8 بوصة | رأس مسطح بمقبس سداسي | ملولبة بالكامل | فولاذ سبائكي مع أكسيد أسود حراري (100 / عبوة)

Just finished mounting a custom tooling fixture and these flat head screws seated flush perfectly in the countersunk holes. The black oxide finish looks clean and professional on the assembly.

The black oxide finish is a nice touch—they don’t look like cheap hardware and held up fine in my jig setup. The hex socket drive seated perfectly with my Allen key, and all 100 threads were clean with no burs.

I needed a batch of strong fasteners for building a jig, and the hex socket drive on these made installation quick with no stripping. The thermal black oxide finish looks clean and feels durable against light shop grime. Exactly what I expected for precision tooling work.