HOLO-KROME 86007 براغي رأس مقبس M4-0.7 × 8 مم | رأس زر محرك مقبس سداسي | فولاذ سبائكي بأكسيد حراري أسود (100 / عبوة)

The black oxide finish looks sharp and held up fine when I torqued them into a steel fixture plate. Threads cut cleanly with no binding, and the whole pack was consistent.

I used these on a small jig for my drill press, and the black oxide finish hasn't chipped during assembly. The threads engaged smoothly right from the start, which saved me time adjusting them.

The socket drive seated cleanly in my hex driver without any wobble—threads were sharp right out of the bag. These worked perfectly for locking down a jig on my mill table, though I wish the 8mm length came in a slightly shorter option for thinner plates.