Size of crush washer on rear diff

[RockyMtnYota]

Might be a dumb question. I found a bunch of posts couldn't see where the size of the crush washer for the fill nut is listed. Is there a specific size washer needed for the fill nut on rear diff? Thanks fellas

1999 limited w diff lock rear end

 

[Lassitor]

Might be a dumb question. I found a bunch of posts couldn't see where the size of the crush washer for the fill nut is listed. Is there a specific size washer needed for the fill nut on rear diff? Thanks fellas

1999 limited w diff lock rear end

Synthetic Fluids Toyota 4Runner Information

part#s & wrench size

 

[TheDurk]

Here are specs:

Oil Drain Plugs - Crushable Steel Gasket

18mm I.D.

24mm O.D.

Thickness: 2.5mm

Replaces Toyota: 12157-10010

 

[RockyMtnYota]

thank you gentlemen

 

[19963.4lsr5]

I got aluminum washers from the local motorcycle shop. They work great.