براغي رأس كبسولة #10-32 × 1/4 بوصة | محرك سداسي رأس زر | حبيبات نايلون | ملولبة بالكامل | فولاذ سبائكي مؤكسد أسود حراريًا (100/عبوة)

Installed these in a jig for a small milling project and the button head sits flush without interfering with the workholding. The black oxide finish looks clean and hasn't shown any wear after a few adjustments.

The nylon pellet is a nice touch—these little button heads hold firm in my tooling plates without backing out, even after repeated cycles. The black oxide finish looks clean and the hex drive seated perfectly in my allen key, no stripping at all.

Installed these in a couple of jig fixtures and the black oxide finish looks clean and should resist rust nicely. The hex socket drive grabbed well without stripping even with my cheap allen key.