prop shaft thread size?

[hump180]

When I removed my prop, the key was stuck and knocked down some threads on the shaft. Does anyone happen know what size die I could use to rethread the stripped threads? Has anyone had this problem in the past?

[Jim Hardesty]

On my 2001 its 3/4-10.  I think that thats common for a 1" shaft.  And yes I had problems when I changed props.  I like stainless steel for shaft.  I expect that I will have to change at some time.
Jim

[Ron Hill]

Jim's answer is correct.  If you need a new key, take the old one to almost any hardware store and they'll match it with a new key.   

[Mike Denest]

Make sure you use a stainless cotter pin.  Anything else will corrode away. 

http://www.msc-stainless-fasteners.com/materialsearch/mscproducts/specificproducts/cotterpins.html

[Ron Hill]

The rule of thumb is to use a stainless cotter pin with a stainless shaft and a bronze pin with a bronze shaft. 

[Jim Hardesty]

I didn't think about the dissimilar metals when I changed my prop.  The cotter pin was stainless and when I pulled the original prop the shaft was badly corroded.  It just broke and fell off aft of the cotter pin hole.  No real harm, I had to cut the shaft to install my maxprop.  I don't worry to much about corrosion due to using the boat only in fresh water, and thought that the problem was due to grounding problems at the marina. 
After my experience, stainless pins in stainless shafts, bronze pins in bronze shafts.

[Mike Denest]

Catalina Direct has them.  http://www.catalinadirect.com/index.cfm?fuseaction=product.display&Product_ID=1625

[Stu Jackson]

I don't worry to much about corrosion due to using the boat only in fresh water, and thought that the problem was due to grounding problems at the marina. 

Water corrodes.

Saltwater corrodes absolutely.

You should worry about corrosion wherever there is water.

Dissimilar metals create corrosion because of their difference on the periodic table.

Bad marina wiring and bad neighbor's boat wiring (which you'll never know about) creates corrosion due to galvanic activity.

The two of them together are simply not pretty.

[Mike Denest]

Prop attach hardware is available from McMaster-Carr which will fit the stainless steel prop shaft.  The hardware is zinc coated stainless steel.
3/4 - 10 slotted nut 95030A260
3/4 - 10 flat nut 93839A837
key 1/4" sq. 24" length (cut to length needed) 89075K522