🔎 UNIDENTIFIED Brass gear with threads

[wildpig]

What is it? It has right hand fine threads inside and 10 teeth. About a 1/2” hole in the gear end. It’s not pipe threads inside.

 

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[Tony in SC]

I don't think IT'S a gear. Looks like a sprocket for square link chain.

 

[ARC]

Water sprinkler part ?

 

[ticndig]

being brass it wasn't meant for heavy work so maybe a coffee grinder or grain mill part.

 

[dozer dan]

in the second picture, it appears the gaps are not uniform in size.

 

[wildpig]

I don't think IT'S a gear. Looks like a sprocket for square link chain.

I think you are right, the wear pattern doesn’t look like it ran against a gear.

 

[wildpig]

in the second picture, it appears the gaps are not uniform in size.

It’s probably just the camera angle.

 

[CaptEsteban]

What is it? It has right hand fine threads inside and 10 teeth. About a 1/2” hole in the gear end. It’s not pipe threads inside.

Many years ago, riding lawn mowers used a simple forward, neutral, reverse transmission, that was chain driven. That looks like the drive sprocket from the transmission .