براغي ضبط نقطة كوب #2-56 × 7/64 بوصة | فولاذ مقاوم للصدأ 18/8 (1000 / عبوة)

Finally, a set screw that doesn't strip when torqued down – the socket drive on these 18-8 stainless steel ones holds the hex key perfectly. Used a few to secure a collar on a small shaft and they've held tight through several test runs.

The cup point really bites into the shaft on these little #2-56 screws, holding a tiny aluminum pulley firmly in place. I’ve bought other set screws before that strip out, but these stainless ones have held up well through a few adjustments.

Installing these on a small gear assembly this weekend, the socket drive made them much easier to seat than traditional slotted screws. The cup point design also gripped the shaft nicely without any wobble. Exactly what I needed for a precise fit.