براغي رأس مقبس M16-2 × 340مم | محرك مقبس سداسي | خيط جزئي | فولاذ سبائكي فئة 12.9 مؤكسد حراريًا أسود (10 / عبوة)

The threads on these M16 screws cut cleanly into the steel I'm working with, and the 340mm length was exactly what my fixture needed. The black oxide finish seems like it'll hold up well in the shop.

Installed these on a heavy press jig and the black oxide finish held up perfectly under clamping pressure. The partial threads gave just the right engagement depth for my fixture plate.

The threads on these M16 socket cap screws are cut clean and the black oxide finish looks consistent across all ten pieces. Used them for a jig setup and the hex socket drive seated perfectly with no wobble. They're pricey, but for Class 12.9 strength, they do the job.