براغي رأس زرية H0LO-KR0ME 65022 1/4-28 × 3/4 بوصة | محرك سداسي رأس أسطواني | فولاد سبائكي مع أكسيد أسود حراري (100 / عبوة)

I was replacing the fasteners on a jig I use daily, and these button heads seated perfectly without stripping. The black oxide finish looks clean and hasn't shown any wear so far.

Finally, some button head screws with a proper hex socket that don't strip out. The black oxide finish looks clean and the threads started perfectly in my fixture. Exactly what I needed for a tight assembly.

I’ve been using these screws for jig building, and the hex socket drive makes installation much faster than with Phillips heads. The black oxide coating seems durable so far, no chips or rust after several days of handling. For the quantity and quality, this pack was a solid value.