HOLO-KROME 76404 براغي رأس أسطوانية مقاس M12-1.75 × 80 مم | محرك سداسي | فولاذ سبائكي مع أكسيد أسود حراري (25 / عبوة)

Installed these in a jig for a precision assembly and the hex socket drive gripped perfectly without any cam-out. The threads were clean and started easily by hand, which saved me a lot of time. Solid screws for the price.

The thermal black oxide finish on these bolts held up perfectly during a jig assembly project, with no galling or seizing despite repeated adjustments. They seated smoothly into pre-tapped holes in my tooling fixture.

These bolts threaded perfectly into my fixture plate with no binding at all. The black oxide finish gives them a clean, professional look against the steel.