Here are a couple updated pics. One of the finished latch bolt and one of the complete swing out. This shows the rubber bumpers.
I don't think most builders use the rubber bumpers. I feel they eliminate the movement and flex of the A frame.
The swing-out dimensions are:
Main beam- 43"
All square tubing is 2x2x3/16"
This is the spindle and latch kit that I used from AtoZ Fabrication
I chose the mega duty spindle for $25 dollars more.