What grade bolts to fasten barcalounger wood base to swivel mechanism?

I have a BarcaLounger Jacque. What grade bolts are used to fasten the wooden base (metal plates on top and bottom of base) to the swivel cylinder? Five (5) bolts - 1 3/4" x 5/16" . Mine are all stripped, and the chair rocks from side-to-side.
McShane, February 2020


done
Use this link to contact the manufacturer's parts department, I would imagine they would be the best people to answer your question and additionally be in a position to supply the exact bolts you need.

https://www.barcalounger.com/parts-services

Rupert, February 2020
link Click here to see other fixes for Barcalounger.