3/4-10 X 1-1/4" براغي مقبس كوبية مع رقعة نايلون | فولاذ سبائكي (50/عبوة)

I needed a high-torque set screw for a stubborn pulley, and these 3/4-10 cup point screws grabbed it perfectly without slipping. The alloy steel feels solid, and the nylon patch locks it in place even with vibration around the shaft.

The cup point on these set screws really digs in and holds tight, even on slightly uneven surfaces. I used them to secure a heavy steel bracket, and they haven't budged a millimeter since installation.

I needed some high-torque fasteners for a heavy machinery adjustment, and these hex socket set screws held perfectly under pressure. The nylon patch is a nice touch—keeps them from backing out without needing thread locker.