Identify this part
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All, I have seen this part before, but I cannot remember what it is used for. Any advice is appreciated. The threaded hole is about 18 or 19mm. The OD of the part is about 50mm.
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Here is a photo of the part to ID: 
On Sat, Mar 14, 2020 at 8:54 AM CW Bill Rouse via Groups.Io <brouse=gmail.com@groups.io> wrote:
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amelforme
That’s the bolt and washer for the spare fixed pitch prop.
Joel
JOEL F. POTTER-CRUISING YACHT SPECIALIST~L.L.C. THE EXPERIENCED AMEL GUY UNSURPASSED AMEL MARKETING EXPERIENCE AND PRODUCT KNOWLEDGE Office 954-462-5869 Cell 954-812-2485
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of CW Bill Rouse
Here is a photo of the part to ID:
On Sat, Mar 14, 2020 at 8:54 AM CW Bill Rouse via Groups.Io <brouse=gmail.com@groups.io> wrote:
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The bottom part goes between the shaft nut and your prop (if it’s a fixed blade, not sure about folding). At least that’s where mine has always been.
toggle quoted messageShow quoted text
Ian & Margaret Local Lola II SM153
On Mar 14, 2020, at 9:57 AM, CW Bill Rouse <brouse@...> wrote:
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Hi Bill. Il 14/03/2020 14:57, CW Bill Rouse ha
scritto:
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Eric Freedman
I think it is the nut and locking washer for the spare prop. Fair Winds Eric Amel Super Maramu #376
From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of CW Bill Rouse
Sent: Saturday, March 14, 2020 9:57 AM To: main@AmelYachtOwners.groups.io Notification Subject: Re: [AmelYachtOwners] Identify this part
Here is a photo of the part to ID:
On Sat, Mar 14, 2020 at 8:54 AM CW Bill Rouse via Groups.Io <brouse=gmail.com@groups.io> wrote:
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Yes, that’s right:
It is the screw for the spare fixed prop on SM’s. it is not for the autoprop.
The flat part has to be between the prop and the nut and has to be bend at the end of installation that the nut could not be “unscrewed” by itself.
The small lip of the flat part has to be placed into the slot of the prop.
Fair winds Olaf
S/V Katchopine, SM2K 392 currently in Trinidad
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Giovanni TESTA
Sent: Samstag, 14. März 2020 11:52 To: main@AmelYachtOwners.groups.io Subject: Re: [AmelYachtOwners] Identify this part
Il 14/03/2020 14:57, CW Bill Rouse ha scritto:
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I am about to install this part and do not understand how that washer keeps the nut from backing off. If the “tooth” on the washer fits into the key-slot of the prop as described above, how does that keep the nut from backing off? Anyone have a photo?
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Ian Park
No photo Richard. Which model? My Santorin has a fixed prop. There is a washer between the prop and the coned nut. It fits into the key way slot. Tighten the bolt then use a sharp screwdriver to lift the edge of the washer and bend it onto the flat of the coned bolt.
Ian ‘Ocean Hobo’ SN 96
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I have the above pictured washer and nut. The washer tooth fits into the keyway of the prop perfectly. But if oriented that way, the nut is still free to spin.
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Super Maramu.
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I would appreciate it if someone who has installed the fixed prop will verify the image below and the correct way to lock the prop in place: 
On Mon, Jul 19, 2021 at 7:48 AM Richard May via groups.io <airwisrich2000=yahoo.com@groups.io> wrote: Super Maramu.
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Bill Kinney
Bill,
You are correct. This style of locking prop washer is very common on French built boats using metric standard prop shaft tapers. For boats using these, it is best to carry a spare washer. They can be peened over to lock the nut a couple of times, but they eventually fatigue and fracture. It is best practice to replace them each time the prop is removed. Bill Kinney SM160, Harmonie Brunswick, GA
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Mohammad Shirloo
Hi Bill;
Just completed this install under water. Confirm that your depiction is the correct way of installing the fixed prop. Attached please find some pictures of our final installation. Sorry for the blank screens in the screen shots. I have 4 monitors, so that’s how it comes out. But it is easy to zoom in and get a clear picture.
Respectfully;
Mohammad and Aty B&B Kokomo Amel 54 #099
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io>
On Behalf Of CW Bill Rouse via groups.io
Sent: Monday, July 19, 2021 6:10 AM To: main@AmelYachtOwners.groups.io Notification <main@amelyachtowners.groups.io> Subject: Re: [AmelYachtOwners] Identify this part
I would appreciate it if someone who has installed the fixed prop will verify the image below and the correct way to lock the prop in place:
On Mon, Jul 19, 2021 at 7:48 AM Richard May via groups.io <airwisrich2000=yahoo.com@groups.io> wrote:
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Jeaneric Ziegler
Le lun. 19 juil. 2021 à 15:10, CW Bill Rouse <brouse@...> a écrit :
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Bill,
I had to trade out my prop for a short time while in the US. The boatyard swapped them for me. Once the fixed prop was on, the washer with the tab is next and then the nut. Once the nut was secure they bent the tab of the washer up to lock the nut in place.
With best regards,
Mark
Skipper Sailing Vessel - Cream Puff - SM2K - #275 Currently cruising - Tahiti, French Polynesia www.creampuff.us
From:
main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On
Behalf Of CW Bill Rouse
I would appreciate it if someone who has installed the fixed prop will verify the image below and the correct way to lock the prop in place:
On Mon, Jul 19, 2021 at 7:48 AM Richard May via groups.io <airwisrich2000=yahoo.com@groups.io> wrote:
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