براغي تثبيت سداسية برأس مسطحة M3 × 16 مم | فولاذ سبائكي (1000 قطعة/عبوة)

The hex socket drive bit into my driver without any wobble, which made racking these into a tight bracket a breeze. I've used cheaper set screws before, but the alloy steel threads cut cleanly on the first pass every time. A solid thousand-piece box that should last me through several projects.

Finally, a set screw that actually holds tight under vibration—these M3x16mm flat points are perfect for securing small pulleys on my 3D printer. The hex drive makes them easy to adjust even in cramped spots.

The flat point tip seats well in the workpiece, which I appreciate for keeping things from wandering. Took a star off because a few screws in the bag had slightly rough threads, but the hex drive and alloy steel feel solid for the price.