براغي رأس أسطوانية داخلية سداسية M4-0.7 × 80 مم | محرك سداسي | سنون جزئية | فولاذ سبائكي فئة 12.9 مؤكسد أسود حراريًا (100 / عبوة)

These 80mm length M4 screws are just what I needed for a deep reach into a tooling fixture. The black oxide finish looks clean and the hex socket drives smoothly without stripping.

Installing these in a jig for my CNC, the hex socket drive fit snugly and the black oxide finish resisted any marring from the wrench. Threads cut cleanly into the tapped holes, and the 80mm length gave just the right reach through a stack of steel plates. It's nice when cheap hardware doesn't feel

These 80mm M4 screws were exactly the length I needed for a jig I'm building. The black oxide finish looks durable and the hex socket made them easy to tighten without stripping.