براغي رأس أسطوانية بمقبس M16-1.5 × 60 مم | محرك مقبس سداسي | خيط كامل | فولاذ سبائكي فئة 12.9 مؤكسد حراريًا أسود (25/عبوة)

The black oxide finish on these M16s is flawless—no chips or uneven spots anywhere on the threads. I torqued them into a jig plate and they held perfectly without a hint of galling, exactly what I needed for a permanent fixture.

Needed a high-strength bolt for a custom jig I'm welding up, and these 12.9-grade screws torqued down perfectly without stripping. The threads are clean and the hex socket grabbed the Allen key snugly right out of the package.

The black oxide finish looks great and held up fine during assembly. These fully threaded M16s seated cleanly in our jig with no galling, and the hex socket drive made torquing them down straightforward. Class 12.9 feels properly stout for the load.