براغي مقبس كوب بقطر #4-40 × 1/8" | فولاذ مقاوم للصدأ 18/8 (200 / عبوة)

The hex socket drive makes these easy to seat firmly without stripping, and the 18-8 stainless finish feels reassuringly solid. I used them to lock a small gear onto a shaft and they held tight. For the price per 200, the value is hard to beat.

The cup point on these #4-40 screws really digs into the shaft, so my pulley hasn't budged since I tightened them down. Exactly the right size for securing small collars, and the 18-8 stainless steel feels solid enough for this application.

I’ve got a few of these holding a gear on a small motor shaft, and the cup point really seats itself without stripping the screw. The 18-8 stainless feels solid, and the socket drive takes an Allen key cleanly—no rounding out on the first tighten.