براغي رأس مقبس HOLO-KROME 720002530 1/2-13 × 5-1/4" | محرك مقبس سداسي | فولاد سبائكي مع أكسيد أسود حراري (10/عبوة)

I needed something sturdy for a jig I’m building, and these 1/2-13 screws fit perfectly with the hex socket drive. The 5-1/4" length gives excellent grip, and the black oxide finish looks clean and seems durable.

The black oxide finish on these screws is exactly what I needed for a tooling setup—they slide into the hex socket without any wobble. Threads were clean and cut smoothly over the full 5-1/4" length, no binding or rough spots. Solid choice for precision assemblies where you can't afford a stripped h

Used these to mount a heavy-duty fixture on a mill table, and the 5-1/4" length was exactly what I needed. The black oxide finish held up well against cutting fluid and still looks clean after a week of use.