براغي مقبس نقطة كروية مخددة M5 × 12 مم | فولاذ سبائكي (1000 / عبوة)

I needed a batch of set screws that could handle a lot of retightening without stripping, and these alloy steel ones with the hex socket drive are exactly that. The knurled cup point gave me a solid grip on the shaft the first time, and the whole box of 1000 will last me for years.

The knurled cup point really bites into softer metals without stripping, which surprised me for the price. I’ve used a dozen or so in a tight jig setup and the alloy steel feels tough, no deformation on the hex drive yet.

Really glad I grabbed these for a tight spot where a standard set screw kept slipping. The hex socket lets me get solid torque without stripping, and the knurled cup point holds fast even after a day of vibration.