Size of shoulder screw for air cleaner screw on 1981 Honda Express NC50?

Julia Sundstrom /

Does anyone know what size screw this is or one that could be used in it's place? I'd rather not pay $15 on ebay for a single screw if I don't have to. The OEM part # is 90114191000

Thanks!

screw-air-cleaner_thumb90114191000-01_fc6a.jpg

Re: Size of shoulder screw for air cleaner screw on 1981 Honda Express NC50?

Looks like maybe a 5mm thread as the washer that fits it is 5mm . I'd place the air cleaner as it should be on the bike and then measure what length of screw is needed .

Then find a tube of some sort to use as a spacer to take the place of the original shoulder section .

You could always zip tie or wire the air box closed until you find a suitable screw .

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