There is also a 7/32 x 26tpi, which is CEI (cycle) thread. Unlikely in that application, but who knows. http://www.alanstepney.info Alan Stepney's Model Engineering, steam, and workshop pages. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.