براغي رأس مقبس 1/4-28 X 2-1/4" | محرك مقبس سداسي | كرة نايلون | ملولبة جزئياً | سبائك فولاذ أكسيد أسود حراري (100 / عبوة)

These screws held my jig together perfectly—the black oxide finish looks clean and didn't flake during installation. The hex socket drive made tightening them in tight spaces a breeze.

The black oxide finish wiped clean with a rag and hasn’t shown a speck of rust after a week in my damp garage workshop. The nylon pellet holds tension perfectly on the jig I’m rebuilding. Exactly the thread spec I ordered, and the partial threading made alignment a breeze.

The nylon pellet locking them in place is a nice touch for vibration-prone setups. Used a dozen on a jig frame and they seated perfectly without galling. Only wish the partial thread ran a bit longer for more grip depth.