براغي رأس كبس #6-32 × 5/8 بوصة | رأس زر، سداسي المقبس | حبيبات نايلون | ملولبة بالكامل | فولاذ سبائكي، أسود حراري (200/عبوة)

The nylon pellet locking feature works perfectly on these—they hold tight even after repeated adjustments. I've been using them on a small jig build and the black oxide finish hasn't worn at all.

These little button heads are exactly what I needed for a jig I’m building, and the black oxide finish looks clean without being shiny. The nylon pellet adds a nice touch, holding them snug so I don’t have to worry about them loosening during use.

The nylon pellet locking these in place is a nice touch—they hold snug without needing threadlocker, and the black oxide finish looks sharp on my precision fixture. I’ve already used about forty of them and every hex socket engages cleanly, no stripped heads yet.