براغي رأس مقبس M30-3.5 X 180mm | محرك سداسي | خيط جزئي | فئة 12.9 فولاد سبائكي أكسيد أسود حراري (5 / عبوة)

The black oxide finish on these M30 bolts is exactly what I wanted for my jig setup—looks clean and doesn’t glare under shop lights. The partial threading gave me just enough grip for a heavy plate without bottoming out, and all five arrived with crisp, uniform sockets.

I needed heavy-duty fasteners for a large jig I’m building, and these M30-3.5 socket cap screws with the thermal black oxide finish fit perfectly and feel incredibly solid. The hex socket drive seated smoothly without any stripping, and the five-piece pack was exactly what I needed for this job.

Thread engagement on these M30 screws is excellent—the black oxide finish also made them slide right into the jig without binding. Perfect for a heavy-duty tooling fixture I was assembling.