5/16-18 X 3-1/2" براغي رأس سداسي | فولاذ درجة 5 أصفر زنك | خيط جزئي (100/عبوة)

I've been using these to reassemble an old piece of shop equipment, and the partially threaded design on the 3-1/2" length bites really well. The hex head takes a socket without stripping, which is exactly what I needed for those tight spots.

The yellow zinc finish on these grade 5 bolts is holding up great on my trailer hitch setup, and the partially threaded design grabs perfectly without bottoming out. The hex heads seated cleanly with a socket wrench, no stripping even at torque. Pack of 100 will last me years of projects.

I needed a batch of partially threaded 5/16-18 bolts for a machinery repair, and these grade 5 hex heads fit the bill perfectly. The yellow zinc coating looks durable and the threads engaged smoothly without any binding.