What Type Of Bolts To Replace Rusty Bolts

mspring

Petty Officer 2nd Class
Joined
Oct 8, 2007
Messages
140
On my 1976 johnson 115 alot of the bolts are rusty and Im replacing the steering arm. What is the best bolts to replace all the rusty bolts? I dont want to use something that may cause a bad reaction to the metal the outboard is made of.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,912
Re: What Type Of Bolts To Replace Rusty Bolts

Mspring, You can source the bolts from a hardware store which will be much cheaper. You ned to match the length, size, thread and grade. On my Merc inline six, for example, the upper motor mount bolts were grade 8 steel, 7/16"X 6', fine thread. Merc wanted $12ea. I found them at the "Bolt Bin" for <$3 each.

Make sure you get the correct ones. BTW - Stainless steel bolts are not graded. They are about grade 5.
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: What Type Of Bolts To Replace Rusty Bolts

The OEM upper mount bolts for this specific application are $2.83 each.
 

KewlBird

Petty Officer 1st Class
Joined
Oct 6, 2007
Messages
247
Re: What Type Of Bolts To Replace Rusty Bolts

Make sure you get the correct ones. BTW - Stainless steel bolts are not graded. They are about grade 5.

Good information to know, I always thought stainless was stronger than grade 8's.
 

Barnacle_Bill

Admiral
Joined
Feb 8, 2004
Messages
6,469
Re: What Type Of Bolts To Replace Rusty Bolts

If you can find them and then afford them, use monel.
 
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