براغي رأس أسطوانية HOLO-KROME 64008 #6-32 X 1/4" | محرك سداسي برأس زر | سبيكة فولاذية أكسيد أسود حراري (100 / عبوة)

The black oxide finish is exactly what I needed for some jig fixtures—no glare off the heads and they thread into tapped holes without any hang-ups. These button heads sit flush and the hex socket grips the driver firmly, so I didn't strip a single one installing all 100.

Pulled out the micrometer to check these before assembly and they're dead-on size, which is rare for bulk hardware. The black oxide finish already looks like it'll resist rust better than the zinc ones I've used. Arrived in a sturdy box that survived my shop's chaos, a hundred pieces exactly as list

Used these to secure a jig on my drill press and they seated perfectly with no wobble. The black oxide finish looks clean and seems like it will resist rust well in the shop.