براغي ذات رأس أسطواني M24-3 × 140 مم | محرك سداسي | ملولبة جزئياً | فئة 8.8 سبيكة فولاذ معالجة حرارياً بأكسيد أسود (10 / عبوة)

I needed a heavy-duty bolt for a press jig repair, and these M24 socket caps fit the bill perfectly. The black oxide finish seems tough and the hex drive bit grabbed cleanly without slipping.

The black oxide finish on these screws is exactly what I wanted for my jig build—no glare and they slide into the hex socket cleanly. Threads cut smoothly into the steel plate, and the partial thread gives just enough grip for a solid hold. Price was fair for ten class 8.8 bolts this size.

Installed a set of these on a heavy-duty press jig and the hex socket drive seated perfectly without any cam-out. The black oxide finish feels durable and should resist corrosion well in my shop environment.