براغي رأس كبسولة M24-3 × 160mm | محرك سداسي | خيط جزئي | فولاذ سبائكي فئة 12.9 أسود حراري (10/عبوة)

Installed these on a heavy-duty jig I’m building and the hex socket drive allowed for a really solid torque without stripping. The 12.9 grade alloy steel definitely gives them a much stronger feel than standard screws I’ve used before.

Installed a set into a heavy-duty tooling fixture I’m building, and the Class 12.9 alloy steel feels seriously tough. The thermal black oxide finish looks uniform and should resist corrosion well in my shop environment.

Thread engagement is perfect on these M24 screws, and the black oxide finish handled a greasy jig setup without any marring. They're hefty and the hex drive torqued down smoothly to spec.