[SEL] drill sizes for 7BA clear and 7BA tap

[John Hall]

Try this site anytime you run into oddball threads---I use them at work 
quite often.
www.marylandmetrics.com

Am I correct that BA threads are the same as Whitworth?

John Hall


----- Original Message ----- 
From: "David Heggie" <davidheggie at sympatico.ca>
To: <sel at lists.stationary-engine.com>
Sent: Saturday, September 23, 2006 3:11 PM
Subject: [SEL] drill sizes for 7BA clear and 7BA tap


Hi All.

Can you please advise me where to look, or  if you have the information on
the drill size in inches or metric to drill a 7BA clear and a 7BA tap. I
also need the same for BA 2 thru 8.

I am working on a Stuart 10V . Any other information would be most
appreciated.

I am retired and learning to operate a mill and lathe and wish to make
different models. I have some hit and miss engines and a range of maytag and
iron horse kick start engines.

thank you
david heggie
lachute,quebec canada
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