براغي رأس مقبس M24-3 × 170 مم | رأس مسطح محرك مقبس سداسي | فولاذ سبائكي فئة 12.9 مؤكسد أسود حراريًا (2 / عبوة)

The black oxide finish on these M24-3 screws held up perfectly during assembly—no chipping or flaking even after torquing them down with an impact driver. They're exactly what I needed for securing heavy machinery jigs.

The hex socket drive seated cleanly on my wrench with zero wobble, and the 12.9 alloy steel feels reassuringly dense for a 170mm cap screw. I've already got them torqued into a jig fixture and they're holding tight without any finish flaking.

The black oxide finish held up perfectly even after some torque, and the hex socket drive made installation straightforward. These bolts feel incredibly solid for our press tooling setup.