براغي رأس سداسية 5/16-18 × 5/8" | فولاذ درجة 5 مطلي بالزنك الأصفر | خيط كامل (200/عبوة)

I used these to rebuild a trailer hitch, and the hex heads seated perfectly with a socket wrench without any stripping. The yellow zinc coating looks clean and seems like it’ll hold up well against rust.

Threading was clean on every one I checked, and the yellow zinc finish looks consistent across the whole box. The hex heads seated snugly in my socket without any stripping.

I needed a full box for a trailer repair job, and these Grade 5 bolts with yellow zinc came perfectly packed and threaded cleanly the whole way. The hex heads let my socket grip tight without any stripping—exactly what you want for a heavy-duty assembly.