All this interest in Frisky hinges, amazing.
The info in Frisky Tech Misc says
"Door Hinges (note they are handed) were used on cab doors of buses coaches etc but no longer available new.
But you can get replacement ball bolt and spring that are normally enough to rebuild worn hinges Try David Jones [davidjones@Carlyleplc.co.uk]
www.carlylepic.co.uk who used to supply them.
Parts 43.025 pin 51mm, 43.006 pin 58mm, 43.005 ball, 43.009 lock tab,
43.011 spring, 43.0101 nut
The Tech misc on the site is long out of date, up to date copies are available FOC to all Frisky owners and offer the experience of those who have trodden the path before
John
Photo below shows the hinges in situ note top and bottom are different