SP G250 jam nut

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Best I can do with a cellphone.

20210618_194508.jpg
 
I don’t understand why the new nut won’t work? Pic with new nut please.

The new nut is the same width as the old nut. Well the old nut is recessed a couple of mm into that washer. So when you put on the new nut, the hose has a couple of mm less threads to hold onto.
 
The new nut is the same width as the old nut. Well the old nut is recessed a couple of mm into that washer. So when you put on the new nut, the hose has a couple of mm less threads to hold onto.
Interesting hard to see the recess, a pic with the nut off May help to see.
 
Interesting hard to see the recess, a pic with the nut off May help to see.

Do you have an old nut in front of you? Basically picture the smooth area is recessed into that washer. But with the new nut it sits on top of the washer.
 
Ok I can see why you don't see it.

Here is one of the nuts I pulled off my G250HP, it is the same nut on my S560.

20210618_202546.jpg


It isn't an issue with the G250HP as the smooth side is facing out.
 
I might be able to order Halcyon Aura nuts. I think they use the same design as the S560.
 

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