براغي تثبيت ذات رأس أسطواني بمقبس سداسي ونقطة كوب محززة #1/4-28 X 1-1/2" | فولاذ سبائكي (100/عبوة)

The hex socket drive made tightening these in a cramped bracket a breeze, and the cup point held firm under vibration all week. Alloy steel feels solid for the price, and the knurling gave my fingers enough grip to start them by hand.

The knurled cup point grips really well on shafts, and the 1-1/2 inch length gives plenty of thread engagement. I used these for a robotics assembly and they haven't budged under vibration.

The hex socket drive lets me torque these screws precisely in my jig’s tight spots, which saved a lot of frustration. I’m really pleased with how solid the alloy steel feels in hand.