براغي رأس سداسي 5/16-18 × 5/8" | فولاذ درجة 8 مطلي بالزنك الأصفر | ملولبة بالكامل (1800/عبوة)

The yellow zinc coating looks sharp and even on every single bolt, and the threads are clean all the way down. I used these with a socket wrench on a frame assembly and didn't have a single cross-thread or stripped head out of the whole box.

These bolts fit perfectly into my tractor's mounting brackets for a new attachment. The Grade 8 steel gives me confidence they won't shear under heavy load, and the threads are clean all the way through.

The yellow zinc finish is holding up way better than the plain steel bolts I’ve used before, and the fully threaded design makes alignment a snap. These grade 8s torqued down clean on my equipment frame without a single stripped head.