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-   -   Drive Stud Washer Question (https://www.offshoreonly.com/forums/general-q/386891-drive-stud-washer-question.html)

Brad Christy 11-12-2025 04:07 PM

Drive Stud Washer Question
 
Guys,

In the beginning stages of doing the hydraulic steering conversion in the PQ. While bolting on the drive steering bracket, I noticed this:

https://cimg6.ibsrv.net/gimg/www.off...23fb2c0b5.jpeg

What is it and what does it do?

For the time being, I removed it, as it would jack the bracket up and nothing would line up properly. I could put a washer on other three studs, but thought I’d ask if I even need to worry about it.

Thanks. Brad.

compedgemarine 11-12-2025 04:10 PM

ground washer. the other washers are against powder coat so that one is screwed in so the ground can go from the drive into the gimble

Brad Christy 11-12-2025 04:19 PM


Originally Posted by compedgemarine (Post 4938391)
ground washer. the other washers are against powder coat so that one is screwed in so the ground can go from the drive into the gimble

Comped,

Makes sense. Interesting, though, that the Mayfair kit instructions mention nothing about it, and the bracket is not machined to accommodate it. I guess I need to find three more washers of the same thickness to level them all out.

Thanks. Brad.

Mbam 11-12-2025 09:28 PM

Or drill a hole in the Mayfair bracket in the correct location and use a longer screw. Probably make it oversize.

Brad Christy 11-13-2025 05:48 AM


Originally Posted by Mbam (Post 4938425)
Or drill a hole in the Mayfair bracket in the correct location and use a longer screw. Probably make it oversize.

Marc,

I’m not following….

Thanks. Brad.

Mbam 11-13-2025 10:15 AM

I think I pictured the setup wrong. I was thinking it was a flat plate Oops.

Probably wouldn't hurt to drill the bell housing and use one of the screws and cables from the continuity kit to insure the ground.

https://www.mercruiserparts.com/bam/...l/37499833/282

Brad Christy 11-13-2025 11:13 AM


Originally Posted by Mbam (Post 4938455)
I think I pictured the setup wrong. I was thinking it was a flat plate Oops.

Probably wouldn't hurt to drill the bell housing and use one of the screws and cables from the continuity kit to insure the ground.

https://www.mercruiserparts.com/bam/...l/37499833/282

Marc,I ended up machining 1/16” off the stud boss on the steering bracket and reinstalled the grounding washer. Worked out great.

Thanks. Brad


powerboatr 11-13-2025 12:27 PM

Sort of related
but I needed new stainless lock nuts for my outdrivrs
All the usual places wanted 6 to 10 dollars for one
So searched the specs and found a place called AFT
A box of 100 . Under 50 dollars
Washers were a tad less
https://cimg7.ibsrv.net/gimg/www.off...1eb31b7f48.jpg
https://cimg1.ibsrv.net/gimg/www.off...66122bf5d0.jpg
https://cimg3.ibsrv.net/gimg/www.off...342ea24879.jpg
https://cimg4.ibsrv.net/gimg/www.off...87b1935d1b.jpg
https://cimg8.ibsrv.net/gimg/www.off...df0585b61b.jpg
https://cimg1.ibsrv.net/gimg/www.off...705ba484f5.jpg

Brad Christy 11-13-2025 12:37 PM


Originally Posted by powerboatr (Post 4938461)
Sort of related
but I needed new stainless lock nuts for my outdrivrs
All the usual places wanted 6 to 10 dollars for one
So searched the specs and found a place called AFT
A box of 100 . Under 50 dollars
Washers were a tad less
https://cimg7.ibsrv.net/gimg/www.off...1eb31b7f48.jpg
https://cimg1.ibsrv.net/gimg/www.off...66122bf5d0.jpg
https://cimg3.ibsrv.net/gimg/www.off...342ea24879.jpg
https://cimg4.ibsrv.net/gimg/www.off...87b1935d1b.jpg
https://cimg8.ibsrv.net/gimg/www.off...df0585b61b.jpg
https://cimg1.ibsrv.net/gimg/www.off...705ba484f5.jpg

PowerBoatr,

My go-to is almost always McMaster-Carr.

7/16-20 Stainless Lock Nuts

Works out to about a buck each, including shipping.

Thanks. Brad.

powerboatr 11-13-2025 02:04 PM


Originally Posted by Brad Christy (Post 4938463)
PowerBoatr,

My go-to is almost always McMaster-Carr.

7/16-20 Stainless Lock Nuts

Works out to about a buck each, including shipping.

Thanks. Brad.

Going to add thrm to my favorites as well


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