Washer thickness

[Stuart]

Got some nice acorn style nuts for my valve cover.  The previous nuts had washers fixed to them so I need a set of washers.  I know it's a 6mm but do them come in different thicknesses and if so what thickness should I get?  Also, wave or flat?

 

Stuart

[halboyles]

Parts manual says "Spring washer B6".  So it is an 6mm wavy washer.  Not sure what the B stands for.

['76mintgrün'02]

My car came with the original shoulderless acorn nuts.

They always looked a little naked to me.

A washer underneath would help.

 

These are from a vOlvO, of the same era.

 

I like them better, because I do not want to keep track of nuts and washers, when I pull the cover off.

 

Flagowold pointed out that the tip is a cap, which pops off.

I thought they were cut from one piece.

It shows, sort of, in this photo.

I like that the little nub-tip on top guides the wrench into place.  

It also protects the threads from the elements.

 

I always wince a little, when I see 'normal' nuts used there.

 

[Stuart]

My 72 had a regular nut with a washer fixed to it.  My son's 73' has the acorns with a 6mm wavy washer.  I'm getting 6mm wavy washers from Fastenal. 

 

The debate is how to finish the acorns.  They are currently chrome and look kind of "out of place" on my powder coated valve cover.  The current thought is to get them Cad plated in the yellow gold used on my webers to tie things together. 

 

we'll see.

 

Stuart

[JohnS]

https://www.belmetric.com/brass-acorn-nuts-c-3_50_1536/na6brs-acorn-nut-brass-p-9737.html

 

['76mintgrün'02]

Ooh, brass nuts.  Those might look nice, once they get a little patina to 'em.

 

Then you'll need a brass door/shift knob to go with them. 

 

[wegweiser]

Make sure you don't get stainless washers... as they're impossible to fish out of oil galleries with a magnet, should one fall in the head, during valve cover removal. It hasn't happened to me yet.... but it would be a nightmare if it did.