براغي رأس أسطوانية M5-0.8 X 10mm | محرك سداسي داخلي | سن كامل | فئة 12.9 فولاذ سبائكي أكسيد أسود حراري (800/عبوة)

I've been using these for jig assembly and the hex socket drive engages perfectly with my Allen keys—much better than cheap screws that strip. The 800 count will last me through several projects.

The black oxide finish on these screws looks clean and professional in my precision assembly jig, and the hex socket drive makes them much easier to tighten in tight spots than Phillips heads. I’ve already used about 100 of them, and every single one threaded smoothly without any burrs or defects.

Installed these in a tooling jig I’m building and they seated perfectly with a 3mm hex key — the black oxide finish looks clean and seems durable so far.