براغي ذات رأس أسطواني HOLO-KROME 720000270 #4-40 X 1-1/4" | محرك سداسي | فولاد سبائكي أسود حراري (100 / عبوة)

I'm working on a small jig and these #4-40 screws fit the tapped holes exactly, with the black oxide finish showing no chips or uneven coating. The hex socket drive gripped firmly from the first use, and the alloy steel feels plenty strong for this application.

These #4-40 screws worked perfectly for securing a jig fixture on my mill table. The hex drive made installation quick and the threads cut cleanly into the tapped holes.

The black oxide finish on these screws is nicely uniform and gives them a professional look for jig building. They fit snugly into my tap die without any wobble, and the hex drive engages cleanly with my Allen wrench.