They're 7/16-20 UNF thread. You can use allen-socket set screw as plugs.
See McMaster-Carr: www.mcmaster.com <http://www.mcmaster.com/> .
-=Chris
Chris King
http://home.comcast.net/~kvcbk/
<-----Original Message----->
From: Jambone
Sent: 2/3/2004 2:02:27 PM
To: spitfires@autox.team.net
Subject: Thanks! and Air Rail bolt question
If I want to remove my air rail and plug the holes, what size/pitch bolt
or
screw should I use? I'd like to be able to add/remove the air rail as
situations permit. Seems like I've read that these holes are British
Standard
Fine threads or British Standard Pipe threads, but I can't find the
specifications anywhere online or with my local British parts suppliers.
Best Regards,
Brian Hill
'76 Spitfire 1500
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