Are these washer tank screws or something else?

[Sedbld]

Digging up and cleaning original hardware for my project and came across what I thought was washer tank screws. But after cleaning a bit found that they have copper washers. So now I’m not sure if they are. They are approximately 7/8” long and little smaller than 1/2” washers. Anyone have any thoughts or seen these or am I one the right path? Thanks in advance

 

[RemCharger]

64 Dodge? They remind me of the grill screws.

 

[Fran Blacker]

They look like washer screws because of copper washers.

 

[Sedbld]

Haven’t had any earlier than 66 cars. I thought they were washer screws but don’t ever remember seeing the copper washers on them. All repros have steel even from AMK

 

[jimbosride]

 

[R413]

Again, what car are you working on here?

These type are also used for console body to floor brackets, fuel filler grommet to trunk floor. I have seen the copper washer type but not on washer tanks.

 

[Davefinan]

I had a 67 satellite and a67 sport fury and they both had those copper washers on the screws. They looked identical to your picture.

 

[Runcharger]

I haven't thought about it before but the copper washers make sense for mounting a plastic tank.

 

[Cranky]

I had a 67 satellite and a67 sport fury and they both had those copper washers on the screws. They looked identical to your picture.

Where were they used?

 

[dadsbee]

I've never seen a copper washer anywhere but a flex hose fitting...

 

[Fran Blacker]

My 66 Satellite washer reservoir has them.

 

[dadsbee]

My 66 Satellite washer reservoir has them.

Copper?.. I'll have to go look at mine...

 

[Sedbld]

I would look on my 67 GTX but it’s been missing the bottle since day 2 or so. Maybe different supply for different plants or to make up for a shortage. Amazing what I find as I’m digging through hardware that I’ve collected over the last 40+ years