I am not certain but think that it is an 0.050” which is a 4-cornered one.

Robert Downs

From: [email protected] [mailto:[email protected]] On Behalf Of Paul Sokoloff
Sent: Tuesday, May 16, 2023 10:38
To: mrca
Subject: [MRCA] Bristol wrench for ART-13

Hello,

   I am trying to replace the vacuum relay and need the size of the bristol wrench for the connections so I can order one.  I had purchased a multi wrench collins bristol kit several years ago with 6 sided and 4 sided wrenches but none of them fit. 

Thanks,  Paul WA3GFZ