HOLO-KROME 76217 براغي رأس مقبس M6-1 × 80 مم | محرك مقبس سداسي | سبيكة فولاذ أكسيد أسود حراري (100/عبوة)

These M6-1 x 80mm screws threaded perfectly into my milling machine's T-slots without any binding, and the black oxide finish hasn't chipped or worn after a week of heavy use.

I needed longer screws for a jig I was building, and these M6 x 80mm bolts had the perfect thread engagement. The black oxide coating seems tough and hasn't chipped during installation.

These screws threaded perfectly into my mill's T-nuts without any binding, and the black oxide finish has held up well against light oil exposure. The 80mm length was exactly what I needed for clamping down a thick fixture plate.