براغي رأس أسطوانية 3/4-10 × 1-1/4" | محرك سداسي | حبيبة نايلون | ملولبة بالكامل | فولاذ سبائكي بأكسيد حراري أسود (25 / عبوة)

I used a few of these to replace stripped screws on a milling jig, and the hex socket drive made installation much easier than a standard allen key. The nylon pellet locking feature is a nice touch for keeping them secure under vibration.

The thermal black oxide finish gives these a nice, uniform look and seems to hold up well against minor scrapes during assembly. I grabbed them for a fixture build and the nylon pellet held the threads snug once torqued down, which was a pleasant surprise.

I used these for securing a heavy-duty jig on my milling machine, and the nylon pellet really locks them tight against vibration. The black oxide coating also arrived clean with no chips or defects.