1913 Heinze coil box - original firewall nuts - what size are they ???

Topics Last Day Last Week Tree View    Getting Started Formatting Troubleshooting Program Credits    New Messages Keyword Search Contact Moderators Edit Profile Administration
Model T Ford Forum: Forum 2013: 1913 Heinze coil box - original firewall nuts - what size are they ???
Top of pagePrevious messageNext messageBottom of page Link to this message  By David Dare - Just a little South West . on Thursday, January 17, 2013 - 07:14 pm:

I guess that heading just about covers the question, the early Heinze ( wood ) coil box nut to fasten to the firewall, has 4 chunky old style nuts ( somehow l have lost 3 of the 4 ), and would like to know what size they are, our local bolt shop has no idea, ....we know its a 5/16" ....... that's about it.

Anyone got any spares ???

Cheers

David.


Top of pagePrevious messageNext messageBottom of page Link to this message  By R.V. Anderson on Thursday, January 17, 2013 - 07:33 pm:

They are a brass (plated steel) hex nut 5/16" x 20 tpi, 19/32" across the flats and 0.330" thick. That thread is unique to the Heinze box. I make them if you need them.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Larry Smith on Friday, January 18, 2013 - 10:06 am:

RV makes good stuff. I have quite a few of his bolts on my cars.


Top of pagePrevious messageNext messageBottom of page Link to this message  By John F. Regan on Friday, January 18, 2013 - 11:26 am:

The 5/16-20 thread tap and dies are available at most online tooling stores as a "special size" and not really too expensive. Many a wood box Heinz coil box has been found with 5/16-18 threaded nuts having been cross threaded in place or at least stuck on the stud ends when they didn't go on more than a couple of threads.


Posting is currently disabled in this topic. Contact your discussion moderator for more information.
Topics Last Day Last Week Tree View    Getting Started Formatting Troubleshooting Program Credits    New Messages Keyword Search Contact Moderators Edit Profile Administration