MTFCA Forum

I would like to order some spare nuts and bolts here in Germany .
The vendors (e.g. at the 'bay') offer hardware with UNC and UNF.
Do I understand it right that for the Ford I need the UNC type (number of threads = 20 per inch) ?

Thanks in advance for any hint !

Joerg ; Most of the bolts and nuts are : UNF .
And special 3/8 x 24 threads .

Guten Tag
Toon

Where the Imperial system differs is that the pitch is NOT a constant in both the Fine and the Coarse series (which is opposite of metric where the thread pitches stay a constant pitch for each of the series)

Most auto is Fine series ((UNF) which is also referred to as SAE. There are a few exceptions on a T, such as head bolts which are Coarse series, and magneto brass bolts-these are 14-24 ASME. (Unless there is a repro ring which for some reason they make 1/4-28 UNF)

Haven't I seen a chart of all the thread sizes, used throughout the Model T? If someone can post that it may help Joe out.

Thanks a lot to all !
So you helped me to order the correct sizes in UNF.

I do have this chart which shows all dimensions of nuts used on a T

Bitte. Das metrische system ist so viel einfacher.


The above chart showing the chassis is the SOCKET size used...the thread itself will be different.

This came out of one of the local Clubs (author unknown) and has been modified over the years as more becomes known.

Very helpful list - thank you !

BUT (sorry, I am beginning to feel very slow on the uptake): the part below shall be 7/16 but I could not bring a 1/2 inch (8/16) wrench on it (too tight) and had to use a metric wrench with 13 mm opening (which should be someting like 8.2/16).
The nut size in inch should name the opening of the wrench, shouldn't it ???
5/16 nut = 5/16 wrench, 1/2 nut = 1/2 wrench etc. --- and this is meant to be the socket ???

Joe,
You can find most of the bolts and nuts at Granit or Metaalreus.nl, you will pay a fraction of the price and don't need to pay import and other taxes.

Good luck
Andre
Belgium

That chart shows what wrench size you need for each nut and bolt, not the thread sizes.

Stephen

Great tip André - that is even better than ordering in the U.K. !
Now also found the 'zollshop' here in Germany.

Thanks Stephen - that does confirm to myself that I am not totally 'NUTS'

Jeorg, the part you show is not a typical example of nut/bolt sizes. 7/16" is the thread size but the brass hex on the grease fitting is smaller than the usual nut used on a 7/16" bolt. It is a thin walled pressing. As such, it should not be used as a locknut on your fan shaft.

Allan from down under.