Shimming a Prop Nut

[JeffBoath]

Following on from my previuos post related to correctly tighening up a prop on a shaft and lining up the hole in the drilled nut with the drilling in the shaft, I now need to locate a 1mm thick stainless steel or phosph
er bronze shim (washer) the internal diameter is 22mm. I've been the my local chandlers who thought it was a bit of a head scratcher. Any thoughts on where I might get one?
Thanks.

 

[savageseadog]

I've resolved that problem by using wet and dry 180 grade paper on a flat surface and honing the nut down.

 

[ghostlymoron]

Some details here but you'll probably have to buy 100.

 

[colhel]

You could select something from here, http://uk.rs-online.com/web/c/?sra=oss&searchTerm=shim&x=33&y=10

If you get .25mm you could cut to shape to shape with a good pair of scissors and build up the thickness until you got it right.

 

[RobinBirch]

If you struggle to find a piece off the shelf pop down to your local little engineering unit and they should be able to cut one off some s/s bar on a lathe.

It may cost a little bit but you'll get the washer to your exact dimensions.

Don't forget to get a spare.

 

[nedmin]

As savageseadog says "Take a bit off the nut" A friendly lathe owner could help.

 

[Spyro]

As savageseadog says "Take a bit off the nut" A friendly lathe owner could help.

Might be a bit hit and miss getting it just right. I would take a file and a vice to the boat. File a bit off the nut try it if it's not right just take off a bit more until just right.

 

[VicMallows]

I read the OP as a requirement for a 1mm spacer (washer) in order to allow the nut to tighten down on the available thread ....rather than a problem aligning the hole with the (castellated?) nut.

The link by gostlymoon lists many sizes of washer, but NOT 22mm.

 

[JeffBoath]

The prop nut tightens beyond the drilling in the shaft, consequently filing down the nut would only make matters worse (thanks for the reply any how). I do need a shim to take up the space, maybe an engineering shop is the best option.

 

[oldharry]

Probably easiest to get it cut/ punched out from a suitable sheet material offcut of the required thickness. Local metalworker/smith should be able to help.

You can check the thickness before you get it cut by trapping a bit between the hub and nut before getting it made up.

as Jeff says, filing the nut just makes things worse, its going too far already to allow alignment.

 

[Ruffles]

The prop nut tightens beyond the drilling in the shaft, consequently filing down the nut would only make matters worse (thanks for the reply any how). I do need a shim to take up the space, maybe an engineering shop is the best option.

Is it a castle nut or a dome nut with a hole drilled? Mine is the latter and I tightened an extra 1/6th turn and drilled another hole.

 

[nedmin]

As well as taking a bit off the nut you,d need a wsher as well.What I have done is tightened the nut onto washer so its the tighteness you need.See what the angle is to line the holes up. Measure across top of threads to see what the dimension is .If its 45 deg. out you need 1/4 of this distance.

 

[nedmin]

P.S. Senior moment if its 90deg you need a 1/4 !!!!

 

[JeffBoath]

I've actually measured the required shimming and it's 1mm, give or take a strong arm for tightning, I now think that the best answer is to get this fabricated to my specification.