Looking at new bolts for axle flanges. Aircraft Spruce #s Bolt-AN7-A-11 5/8 Hex 7/16 dia. 1 7/32 long Lock Nut-AN365-720A 7/16 20 Washer-716 7/16 AN flat Are these the correct numbers and are they supposed to have a washer under the nut ? Thanks, Mike