4R5

Looking for a shoulder bolt for the Vista Cruiser split 2nd seat, '68 to '72, possibly '64 to '67.
0.75" head dia, 0.5" dia x 0.25" length shoulder, 5/16-18 x 0.35" thread
Picture below


There are 2 used - 1 ea for the 1/3 and 2/3 seats on the inboard side if each seat.
The bolt is located here


There is a bushing that's part of the bolt/pivot, if you have the bushing as well, great, but not critical.



There is another similar looking shoulder bolt used in 4 places, but its shoulder and thread are longer.
Thanks!