[Tigers] overrider fixing hardware question

[Rollright at aol.com]

Hello there,
 
I'm getting some overriders chromed. Brought them in today.
 
They are the earlier kind with the steel insert brazed inside.
 
Since they don't use the newer fixing carriage bolt, I attempted  to look 
up the fixing hardware
in the parts book.
 
Unfortunately, it doesn't mention fixing hardware for the older  overrider.
 
Can anybody tell me what bolt (and thread size) is correct for this  
application.
 
 
Jim  Armstrong
Mk 1A 
382002083
LRXFE