Leg shield crash bar bung measurements
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
I took careful measurements of a pair of bent crash bars that were originally used to mount leg shields.
The bungs are threaded to 6 mm × 1 mm and have an OD of 14 mm. They sit proud of the crash bar by 3 mm. The tube used for the through hole is 6.95 mm ID × 10 mm OD × 28 mm long.
Bung King is one source for threaded bungs.