براغي إبهام كتف 1/4-20 × 1/2" | فولاذ مطلي بالزنك (100 / عبوة)

Grabbed a pack of these for mounting some aluminum brackets, and the shoulder design gave me a much cleaner, more secure fit than standard screws. Threaded smoothly into the 1/4-20 holes without any binding, and the knurled heads make hand-tightening a breeze. Will definitely be coming back for more

The zinc plating on these thumb screws feels smooth and should prevent rust well. They work perfectly for tightening down my jig fixtures.

The knurled edges give you a solid grip even with greasy fingers, and the zinc coating looks clean out of the bag. I've used about forty of them on a shelving frame and every one threaded smoothly without a single stripped head.