براغي رأس كبس مقبس M14-2 × 60 مم | محرك مقبس سداسي | خيط جزئي | فولاذ سبائكي فئة 12.9 مؤكسد أسود حراري (25 / عبوة)

The black oxide finish on these screws hasn’t chipped at all while I’ve been torquing them into a steel fixture, and the 12.9 alloy grade feels reassuringly solid for the price. I’ve used them across a few precision assemblies now and the hex sockets hold the driver without any stripping—definitely

The black oxide finish is a nice touch—they slide into the hex wrench without any fuss and the 12.9 alloy steel feels rock solid under torque. Used them to bolt down a steel bracket and they held perfectly overnight without backing out.

Installed these in a custom jig last week and the 60mm length was exactly what I needed. The black oxide finish seems durable and the hex socket drive seated perfectly without stripping.