براغي ذات رأس أسطواني 7/16-14 × 1-3/4 بوصة | محرك سداسي | حبيبات نايلون | ملولبة بالكامل | فولاذ سبائكي مع أسود حراري (100 / عبوة)

The threads cut cleanly into my jig plate without any binding, and the black oxide finish held up well against the coolant splatter. The nylon pellet locks them in place solidly, which is exactly what I needed for a high-vibration setup.

I was pleasantly surprised by the consistent thread quality—every screw threaded smoothly into my fixture without binding. The black oxide finish is even and hasn't chipped during installation.

Honestly, I ordered these for a jig I'm building and the thermal black oxide finish is exactly what I wanted—a nice, uniform dark look that seems tough. The hex socket drive seated my Allen wrench perfectly with no stripping as I torqued them down into the fixture. These feel like solid, precision-g