Re: A thread about threads......

Posted by PackardV8 On 2011/3/20 15:37:32

Since were dealing with 30's model car here it is important to note that there are 2 different series of standard size US bolts and nuts. One is a series 36 the other a series 64. I'm sure about the 36 and 64 but it will be in and about the 36 and 64 years. Such as 1936 and 1964.

The earlier series had series 36 had a 1/64 less diameter on shoulder nolts and the heads were 1/64 shorter. Possibly nuts were 1/64 inch shorter too.

Probably not a big issue but something to keep in mind if there is a fit problem.