براغي رأس سداسية 5/16-18 × 6 بوصة | فولاذ درجة 5 أصفر زنك | ملولبة جزئيًا (50/عبوة)

Used these for attaching a bracket to my trailer frame and the 6 inch length gave me just enough bite with the locking nut. The yellow zinc held up fine after a few days of rain while I was working outside.

The hex head grabbed my socket wrench perfectly without any slipping. These bolts feel solid for heavy equipment assembly, and the yellow zinc coating looks clean and uniform across all 50 pieces.

The partially threaded shank made installing these into my machinery frame a lot easier since the threads didn't bind up early. The yellow zinc coating looks uniform and should resist rust well in my shop.