M6-1 X 185mm براغي ذات رأس أسطواني | محرك سداسي | ملولبة جزئياً | فئة 12.9 سبيكة فولاذ مع أكسيد أسود حراري (50 / عبوة)

Needed some longer bolts for a jig I was building, and these 185mm screws fit perfectly. The hex socket drive made installation quick with just a standard Allen key, and the 12.9 grade gives me confidence they won't strip under load.

The black oxide finish is a nice touch—these don't look cheap out of the bag, and the threading is clean all the way down to that partial section. I used them to bolt a steel jig plate together and every single one seated perfectly without any chamfer or fit issues.

Class 12.9 hardness is no joke—these threaded far into my fixture plate without a hint of stripping, and the black oxide finish looks properly industrial. Fifty in the pack means I've got spares for the next build too.