1970 Wiper Motor Nuts 3857243

[Allen N.]

The Judging Guide calls for the 3857243 nuts connecting the wiper motor to the firewall to be zinc-plated nuts with integral washers. I have found a vendor selling this nut with an integral star washer that is zinc. I have found several vendors selling this nut with a large concave washer with a yellow chromate finish. What is correct for this nut?

Thanks,
Allen

[Joe L.]

Re: 1970 Wiper Motor Nuts 3857243

The Judging Guide calls for the 3857243 nuts connecting the wiper motor to the firewall to be zinc-plated nuts with integral washers. I have found a vendor selling this nut with an integral star washer that is zinc. I have found several vendors selling this nut with a large concave washer with a yellow chromate finish. What is correct for this nut?

Thanks,
Allen

Allen------

The GM #3857243 nut had a captive conical washer and was phosphate finished.

By the way, I cannot find that it was ever available in SERVICE from GM.

[Gary B.]

Re: 1970 Wiper Motor Nuts 3857243

Allen, I think those are a #10-24 thread. AMK shows an assortment of them.

https://www.amkproducts.com/bulk-fasteners-listing/?codeforlookup=7115

Gb

[Joe L.]

Re: 1970 Wiper Motor Nuts 3857243

Allen, I think those are a #10-24 thread. AMK shows an assortment of them.

https://www.amkproducts.com/bulk-fasteners-listing/?codeforlookup=7115

Gb

[Allen N.]

Re: 1970 Wiper Motor Nuts 3857243

Thank you Joe and Gary.

I placed an order with AMK. Had to order quite a few to get to the AMK $30 minimum.

[Jeff P.]

Re: 1970 Wiper Motor Nuts 3857243

Joe would these be correct for 68 also? I could help Allen pay the minimum.

[Joe L.]

Re: 1970 Wiper Motor Nuts 3857243

Joe would these be correct for 68 also? I could help Allen pay the minimum.

Jeff------


Yes.

[Allen N.]

Re: 1970 Wiper Motor Nuts 3857243

Joe would these be correct for 68 also? I could help Allen pay the minimum.

Jeff,

I sent you an email.

Thanks,
Allen

[Jeff P.]

Re: 1970 Wiper Motor Nuts 3857243

Got it Allen. Thank you.