The Ford Barn - View Single Post - GAV needle threads... unique to this component?

Synchro909 · 08-09-2020, 07:02 PM

1/4 X 24 tpi is not even close to a metric thread.
1/4" is 6.035mm so not 6 mm
24 tpi is a pitch of 1.06 mm not a fit there either.
6mm Metric coarse has a pitch of 1.0 mm.
1/4" Brass is 26 tpi
1/4 UNF is 28 tpi.
It seems to me that 1/4" X 24 is a real oddball. It's not even BA
All that said, I don't understand the American "gauge" threads. I'd never heard of them till I started playing with Model As. Does it fit one of those?

08-09-2020, 07:02 PM	#7
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,496	Re: GAV needle threads... unique to this component? 1/4 X 24 tpi is not even close to a metric thread. 1/4" is 6.035mm so not 6 mm 24 tpi is a pitch of 1.06 mm not a fit there either. 6mm Metric coarse has a pitch of 1.0 mm. 1/4" Brass is 26 tpi 1/4 UNF is 28 tpi. It seems to me that 1/4" X 24 is a real oddball. It's not even BA All that said, I don't understand the American "gauge" threads. I'd never heard of them till I started playing with Model As. Does it fit one of those? __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.