براغي رأس مقبس M3-0.5 X 40mm | رأس مسطح بمحرك سداسي | خيط جزئي | سبائك فولاذية فئة 10.9 بأكسيد أسود حراري (200 / عبوة)

The black oxide finish is a nice touch, doesn’t just look better but seems to resist scuffing when I’m sliding them into tight spots. The partial threading gives just the right grip for my precision assembly, and all 200 came in with clean, uniform threads. They seat flush in the countersink without

I’ve been using these in my mini CNC jigs and the partially threaded design really helps with alignment. The black oxide finish seems durable so far, and the hex drive grips tight without stripping.

These flat heads sink perfectly flush in my jig fixtures, and the black oxide finish hasn't chipped off even after repeated tightening. The partial threading gives just the right grip for clamping without bottoming out in the tapped hole.