براغي رأس كبس بمقبس سداسي 7/8-9 × 5-1/2 بوصة | مقبس سداسي | رقعة نايلون | خيط جزئي | فولاذ سبائكي مع أكسيد أسود حراري (10 قطع/عبوة)

Finally found the right length for my milling machine jig, and the nylon patch keeps them from backing out under vibration. The hex socket drive makes installation straightforward with standard tools.

Had to swap out some worn bolts on a jig, and these fit the hex socket perfectly. The 5-1/2" length gave me just the reach I needed, and the black oxide finish looks like it’ll hold up well.

The nylon patch on these is a lifesaver for my jig setup—they hold snug without needing threadlocker, and the thermal black oxide finish looks clean and resists rust so far. I’ve used them on a couple of precision assemblies and the hex socket drive bites firmly every time.