براغي رأس كبس هولوكروم 64082 1/2-13 × 2 بوصة | رأس زر مع محرك سداسي | فولاد سبائكي مع أكسيد أسود حراري (25 / عبوة)

Installed these on a jig assembly I’ve been working on, and the black oxide finish handled the greasy workshop environment well without any surface rust.

The button head fits perfectly in tight spots where a standard cap screw wouldn't work, and the hex drive makes installation quick without stripping. Holding up well so far in my jig setup after a few dozen cycles.

These threads cut clean and the black oxide finish has held up perfectly through a week of hard use on my bench. The 1/2-13 threads engaged smoothly and seated tight without any galling, which is exactly what I need for repetitive tooling work.