براغي رأس سداسية 5/16-24 × 4-1/2 بوصة | فولاذ درجة 5 مطلي بالزنك الأصفر | ملولبة جزئيًا (50 / عبوة)

The yellow zinc finish on these bolts is holding up perfectly on my trailer hitch project, and the partial threading made installation a breeze. They threaded cleanly into the tapped holes without any binding.

I needed Grade 5 cap screws for a heavy-duty fixture, and these hex heads seated perfectly with a socket wrench without stripping. The yellow zinc coating seems solid so far, and having 50 pieces in the pack was a nice bonus.

The partial threading on these bolts grabbed perfectly when I was mounting a bracket to a frame, leaving just the right amount of smooth shank for alignment. They drove in cleanly with a socket and the yellow zinc coating looks like it’ll hold up well in a damp shop.