1/2-20 × 7/8" براغي ضبط مقبس بنقطة كوب | فولاذ سبائكي (100 / عبوة)

The hex socket drive grabbed my Allen key perfectly even in a cramped spot, and the cup point bit into the shaft without stripping. All 100 pieces looked clean and consistent, threads were sharp out of the box. Exactly what I needed for locking down a pulley.

I needed a set screw that could handle repeated adjustments in a tight motor assembly, and the hex socket drive on these made it easy to get a solid bite without stripping. The alloy steel feels tough and the threads matched my tap perfectly.

The cup point tip seated perfectly in my soft aluminum project without stripping or galling, which was a relief with these small fasteners. They're the right length for 1/4" plate and the hex socket drive gave me good control with just a 3/16" bit.