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 Bolt Size ??
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budd
1st Mate

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USA
45 Posts

Initially Posted - 03/22/2006 :  17:36:14  Show Profile
Does anyone here know what size bolts I need to mount an outboard motor bracket to the stern of an 80 Catalina, I bought the 4 spring bracket from Catalina Direct and will be putting a 9.8 Tohatsu on it when it arrives.
Thanks
Bud

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djn
Master Marine Consultant

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USA
1561 Posts

Response Posted - 03/22/2006 :  17:55:20  Show Profile
Hi Bud, I can't tell you directly, but you should be able to match the holes in the mount bracket to the proper SS bolt. Cheers.

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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts

Response Posted - 03/22/2006 :  17:57:22  Show Profile  Visit Frank Hopper's Homepage
either lowes or home depot should have what you need, I buy most of my SS at Lowes

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djn
Master Marine Consultant

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USA
1561 Posts

Response Posted - 03/22/2006 :  19:41:38  Show Profile
Hi Frank, I had no idea that Lowes has SS hardware. What is the price difference with WM? Probably a lot. Cheers.

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Tom Potter
Master Marine Consultant

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USA
1913 Posts

Response Posted - 03/22/2006 :  19:43:29  Show Profile
My ACE Hardware also carries a large selection of SS hardware, much cheaper than WM.

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Leon Sisson
Master Marine Consultant

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USA
1893 Posts

Response Posted - 03/22/2006 :  20:24:59  Show Profile  Visit Leon Sisson's Homepage
I think I used 3/8"-NC machine bolts, fender, flat, and split washers, and nylock nuts to install my motor mount. A related question is how are you planning to spread out the stress on the transom from those bolts? Particularly the top ones.

I get most of my stainless threaded fasteners from Ace Hardware. Home Depot was a few construction industry SS items not found at Ace.

-- Leon Sisson

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ClamBeach
Master Marine Consultant

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3072 Posts

Response Posted - 03/22/2006 :  21:01:14  Show Profile
I've had some problems with galling, brittleness and corrosion with 'hardware store stainless' that I've purchased in the last couple years. I suspect there is cheap stainless coming in from China/Far East.

I switched back to buying all my stainless from the local chandlery... no problems and the stainless at the chandelry is now cheaper than the hardware store. (I think they saw a gold mine there)

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Fantasy II
1st Mate

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USA
80 Posts

Response Posted - 03/22/2006 :  21:20:51  Show Profile
Catalina Direct sells the complete mounting kit for a decent price. That's where I got mine!

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budd
1st Mate

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USA
45 Posts

Response Posted - 03/23/2006 :  00:08:12  Show Profile
I plan on using a 1/4 inch ss plate for a backing. I should have said- what length of bolts to go thru the brackets plus the stern.
Thanks for the answers
Bud

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KYD516
Deckhand

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USA
24 Posts

Response Posted - 03/23/2006 :  07:37:05  Show Profile
2" are what were on my '85. 3/8ths width. i added half inch backing both inside and out so i had to get 3". also, mine was origianally mounted with screws, but i switched to bolts to get more levergae when tightening.

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KYD516
Deckhand

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USA
24 Posts

Response Posted - 03/23/2006 :  12:41:30  Show Profile
http://catalina25.homestead.com/OutboardMotorBracket.html

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