Mine are 5/16 square file stock 8&1/2 inches long. The profile of various
pitch thereads are ground onto the stock. There are 8 different pitches
for each file.
Blue Point No. TF1124A (11,12,13,14,16,18,20,24 TPI) and TF1127A
(9,10,12,16,20,27,28,32 TPI. Reiff & Nestor Co. METRIC NU_TRIX
(.75,1.00,1.25,1.5,1.75,2.00,2.50,3.00) for the Metric one.
You select the proper pitch and overlap several good threads and work over
the damaged area with regular file strokes. They are a cleanup, fixup
tool. They don't replace a die set, but there are times & places a die
won't fit.
I'm not familiar with thread files, Mike. What are they and what do you
use
them for??
Thanks,
Tom Caperton
'47 2nd 3100
>A close second to the tap & die set is thread files. I have 3. Two
>English and one metric.
>Mike
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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