براغي تثبيت برأس نقطة كوب M3 X 5mm | فولاذ مقاوم للصدأ 316 (300 / عبوة)

The 316 stainless finish feels properly marine-grade, not the cheap coated stuff you sometimes get. I used them to lock a gear onto a motor shaft and the cup point bites into the keyway without stripping. Three hundred is a lifetime supply for my bench.

These set screws are machined cleanly with no burrs, and the 316 stainless steel feels solid compared to cheaper 18-8 hardware. I used them to lock a pulley onto a small motor shaft, and the cup point bites nicely into the metal.

The socket drive fit my hex key perfectly, and the 316 stainless steel feels much more corrosion-resistant than the zinc-plated ones I used before. These M3x5mm cup points hold my pulleys tight on the shafts without any slippage during operation.