براغي تثبيت برأس مقبس بنقطة كوب محززة 1/4-20 × 3/4" | فولاذ سبائكي مطلي بالزنك (100 / عبوة)

The hex socket drive made tightening these in a cramped motor mount a breeze, and the knurled cup point bit into the shaft without slipping. The zinc plating is holding up well after a few oily weeks in the garage, and all 100 threads were clean, no cross-threading.

The knurled cup point holds really securely in soft materials, and the hex drive made it easy to tighten them fully in a cramped bracket. I just finished a jig assembly and these feel much more solid than the grub screws I was using before.

These set screws are solid and the hex socket drive made torquing them down in a tight spot a breeze. The zinc plating looks clean and even across all 100 pieces.