[K20rookie]

Originally Posted by swamp rat

Don't know if your using 5/16, 3/8 or 7/16 but you should use Grade 8 bolts nuts and loc washers, note the zinc chromate finish, the bolts will have the 6 lines on the head of the bolt.

https://www.boltdepot.com/fastener-i...head-size.aspx

This is exactly what I picked up at tractor supply. Grade 8 yellow zinc chromate. Thanks for the chart.