براغي رأس مقبس M8-1.25 X 60 مم | رأس مسطح بمقبس سداسي | خيط جزئي | فولاذ سبائكي فئة 12.9 أكسيد أسود حراري (100 / عبوة)

Used a dozen of these on a fixture jig and the 12.9 alloy steel took the torque without a hint of stripping, the black oxide finish looks clean too. Pressed for time, so the partial thread on the 60mm length made alignment a lot easier.

Installing these in a precision assembly was a breeze, the hex socket drive gripped perfectly without any slipping. The black oxide finish looks professional and seems durable, exactly what I needed for the jig.

Used a dozen of these to secure a jig on my milling table, and the flat hex socket made installation in tight spots a breeze. The black oxide finish seems durable, and the 12.9 grade gives me confidence they won't shear under load. Great value for a hundred pack.