Coil box nuts

[Unprr]

A few days ago, a discussion was started on how to prevent wire breaking. In the post was a photo of a coil box, with a different type of nut, being used.
My question is this, has anyone used these and how good do they hold and were do you find them.

George

[Jim Sims]

the nuts are used to hold the termnal box cover on the Model A.

[MichaelPawelek]

Not for your application but your choice….

[Steve Jelf]

On my last trip I lost a couple of coil box nuts. I intend to install toothed washers. They will cost a lot less than the Model A nuts.

[Allan]

Steve, when I build a coilbox I put a fibre washer on after the porcelain and then firm the nut up without crushing the porcelain. Then the wire terminal is fitted and the second nut. The key is a thinned down wrench to hold the inner nut so that it cannot move when the outer nut is done up. The outer nut becomes a locknut, so no star washer is needed.

Hope this helps,
Allan from down under.

[Oldav8tor]

Like Allen I use a fiber washer. To finish off I use a thin split washer over the wire terminal and a brass thumbnut. In 5300 miles I've never had one come loose.

[Mark Gregush]

I too use brass thumb nuts but without any washers on both the coil box and spark plugs. When the nut is almost tight, with the terminal a little to one side, I turn both the nut and terminal tight. Most of the time, they stay tight.