Prop nuts

the prop nuts that I need are left hand 1-1/4x7(to fit a 1-3/4in. shaft) the thick one is 11/4 in. Thick and the thin one is 3/4 in. Thick the nuts must be either bronze or stainless steel. Thank you.

Most any reputable prop shop should have access to these, have you tried them?

LaBomba said:

Most any reputable prop shop should have access to these, have you tried them?

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Yes of course. Just about everyone in annapolis Maryland area. Boat goes back in on Monday.
Thank you

McMaster-Carr?
They ship overnight

Just looked they list what you need.

You can only move forward, there is no going back

-sorry, but it does bump you thread back up.

Ordered f McMaster but they are not the correct width. Too wide. Not enough room f cotter key to lock as they are not self locking. Don’t want the nuts to fall off while underway. Thank you.

sailr1 said:

Ordered f McMaster but they are not the correct width. Too wide. Not enough room f cotter key to lock as they are not self locking. Don’t want the nuts to fall off while underway. Thank you.

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That would be an easy grinding job to get them to the correct width.

Yes, thank u. I am looking f a machine shop to do just that.
May have to wait until next haul out as Friday is it!
Thank you all again.

sailr1 said:

Ordered f McMaster but they are not the correct width. Too wide. Not enough room f cotter key to lock as they are not self locking. Don’t want the nuts to fall off while underway. Thank you.

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Hate it when your nuts fall off underway... make sure you put the thin nut on first and the thick nut on last.

lost my nuts

https://www.deepblueyachtsupply.com/buck-propeller-shaft-kits
Deep Blue Yaqcht Supply bet they could overnite them if you react quick.

Comodave said:

... make sure you put the thin nut on first and the thick nut on last.

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That ought to keep this thread alive for months.....

DDW said:

That ought to keep this thread alive for months.....

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Yes, it should.

Comodave said:

make sure you put the thin nut on first and the thick nut on last.

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Best practice also includes drilling but and using seizing wire vs cutter pin.

Which nut first?

Comodave said:

Yes, it should.

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On this matter, of all the articles out there, I found this one to best explain the mechanics on why to use the thin nut first. Makes perfect sense.

https://www.followingseas.media/blog/2017/2/8/the-truth-about-prop-nuts-and-why-it-matters

The naval guidelines for ships is also a good reference. See page 96 regarding jam nuts

https://fas.org/man/dod-101/sys/ship/nstm/ch075.pdf