Help me identfy my mystery nut

Found imbedded  in a gravel track

Initially thought it was a truck wheelnut or a railway related  fastener (track is access to  train tracks )

Hex head but with conical bottom face

Thread form has baffled me though – looks like a bottle type rounded form not normal Vee profile

I know the small nut pictured  is a sweet chestnut !

P

I appear unable to attach a picture of this nut .. the mystery deepens sorry

Hope this works

Thread for rebar?

Free shaunthesheeps nut photos.

Security shear nut, post-shear?

Ah, photo has now appeared. Nut that.

mrhoppyFull Member
Free shaunthesheeps nut photos.

I would not google that…

Scammel wheel nut?

Don’t Google that either

I think some railway ties clear thingies use a knuckle thread.

The cone allows a bit of racking. The knuckle thread means they don’t have to be fastedious with dirt.

Yes knuckle thread form looks like a visual fit , found some mentions of applications on railway carriages.  I thought it might be a railway related item because of where it was found.  Area has had lots of work done to reinforce the cuttings / banks – perhaps it is a  civil engineering widget ?

I reckon that’s a drive bush not a nut. For running a lead screw like you get on a lathe or big valve. Probably very worn which is why discarded.

Not exactly the same style but I think the same application  – nut for rock anchors used in civil engineering projects  http://

Thanks for all your help Forum Folk

Ah yeah that was going to be my next suggestion based on slope stabilising.

Thread would makes sense aswell.