براغي رأس مقبس HOLO-KROME 72250 مقاس 1/2-13 × 4-1/2" | محرك مقبس سداسي | فولاذ سبائكي مع أكسيد أسود حراري (25 / عبوة)

The threads cut cleanly into my steel fixture plate without any binding, and the hex socket drove them flush with no stripping. They’re holding a heavy jig together perfectly after a week of use.

The black oxide finish on these cap screws looks clean and professional, and they threaded smoothly into my milling machine's T-slots without any binding. Perfect for precision fixturing work.

I needed some heavy-duty bolts for a jig I was building, and these 4-1/2" cap screws handled the load without any flex. The black oxide coating seems durable and hasn't shown any wear after a few days of use.