Factory Five Racing MK4 ROADSTER Assembly Manual page 324

The nut and bolt use a ⅝" wrench and socket to attach the rear quick jack bolts to the frame and body.
Even with the quick jacks removed, it is still a good idea to wrap the bolts with some rags and duct-tape to save
yourself from painful cuts or bruises.
323
www.factoryfive.com 508-291-3443