Help identifying this washer

[Paulaner]

Found this in my jacket pocket and need help identifying.
Jacket hadn't been worn since last winter when I refreshed the front and rear end.

Its about 1in outer diameter and 9/16in interior diameter. Has a slight taper as you can see in the second image.

 

[Pittraider18]

Found this in my jacket pocket and need help identifying.
Jacket hadn't been worn since last winter when I refreshed the front and rear end.

Its about 1in outer diameter and 9/16in interior diameter. Has a slight taper as you can see in the second image.

Bellhousing washer to the box itself is what comes to mind when I see this. Might jog your memory? Potentially crossmember or engine/trans mount?

 

[Paulaner]

Trans Mount is possible but I dropped that in June. Too warm here to be wearing the jacket then though. I'll look anyway.

 

[StephenZ]

Hard to tell scale, but looks like a head bolt washer

 

[Paulaner]

Sorry should have included something else in the shot to show scale but it's about 1in outer diameter and 9/16in interior diameter.

It most certainly came from either the front or rear suspension or as @Pittraider18 suggested maybe the trans mount.

 

[dang]

How many bolts are that big? Might be easy to spot..

 

[StephenZ]

Just sayin..;-).

 

[bavbob]

Front end somewhere, perhaps thrust arm?

 

[Ohmess]

Guibo?

 

[sfdon]

Found this in my jacket pocket and need help identifying.
Jacket hadn't been worn since last winter when I refreshed the front and rear end.

Its about 1in outer diameter and 9/16in interior diameter. Has a slight taper as you can see in the second image.

Can we stick with mm’s?

https://www.realoem.com/bmw/enUS/partsearch?id=3435-USA-01-1972-E9-BMW-30CS&diagId=33_0915&q=33171125439

 

[Paulaner]

@sfdon - excellent guess but no dice. That one is installed. But you have a good eye. The washer in question is the same size