HOLO-KROME 43034 3/8-24 X 1/2" براغي مقبس سداسي بنقطة كوب مخددة | فولاذ سبائكي أكسيد أسود حراري (100 / عبوة)

I needed some good quality set screws for a jig I'm building, and these fit the 3/8-24 tapped holes perfectly. The knurled end makes a solid grip on the shaft without slipping, and the black oxide finish looks clean. They’re a solid, reliable choice for any precision clamping job.

The cup point design on these screws holds my shaft collars firmly without slipping, and the hex socket drive makes installation quick. I used them to secure a gear on a small transmission, and they haven't budged under vibration.

Finally got around to swapping out a set of these for a worn shaft collar and the knurled cup point really bit into the metal without slipping. They're consistent enough that I didn't have to chase any threads, which saved me a headache.