براغي رأس مقبس #5-44 X 3/8" | رأس مسطح سداسي المقبس | ملولبة بالكامل | فولاذ سبائكي مؤكسد أسود حراريًا (400/عبوة)

The black oxide finish on these #5-44 screws is really uniform and gives them a sturdy, non-reflective look perfect for tooling jigs. They seated smoothly in my fixture with no binding, and the hex drive held up well under moderate torque.

These little screws are a perfect fit for my jig build—the hex socket drive made them easy to torque down even in tight spots, and the black oxide finish looks sharp. They're fully threaded, which gave me solid grip for the whole 3/8" depth. Definitely a go-to for precision work.

Used these on a prototype fixture and the hex socket drive seated perfectly without stripping. The black oxide finish feels durable and gave them a clean, professional look under the shop light.