✅ SOLVED Strange brass nut ???

[villagenut]

found this nut the other day on an 1850-1880 site. Seems a bit odd the way it is shaped and the few marks that are on it. I researched a bit and came up with nothing. When were nuts made that had a rounded side like this? What do the hash marks represent? Age and usage is really what I am after. Thanks, vn

 

[SkaBa]

That is a 'set' nut. Still used to align sliding parts.

 

[Doc Arey]

Think that was used to raise thingathing up and down??

 

[villagenut]

That is a 'set' nut. Still used to align sliding parts.

Thanks SkaBa, but I still don't see any like it on my searches.Plenty of nuts with multiple sides...hexagon, octagon, square, etc. Can you get me a link to this type?

 

[Rawhide]

Looks like a not off a old boiler to me.

 

[wainzoid]

If you were here (up north) I would say that it "froze off" a brass monkey. But since you are in Florida, I have no idea.

 

[diggininms]

Looks like a nut that fit in a certain part to keep whoever from having to use two wrenches in a tight spot.

 

[SkaBa]

villagenut, Tried to find examples, no luck, maybe I am using wrong term. I remember using one that had a washer and hex screw that tightened from underneath.

 

[DCMatt]

It is a cam nut. Not sure what yours was used for but here is one used to adjust a car suspension:

 

[NHBandit]

Too early, one cup of coffee, can't think of the proper name, but I agree it's used in applications where the nut isn't accessible with a wrench or to adjust something. The flat part would go against some other part and keep the nut from turning. Think chain adjuster on the back wheel of a motorcycle where the axle goes through a slot to allow the wheel to move forward and backward. The hash marks would be so you could see when you have run out of adjustment. It's also modern and one of those things you just toss in the trash and keep digging..

 

[Ant]

I see that type of fastener used in electronic applications, used to fix plastic housings together where the nut is difficult or impossible to get to. It slides in a
track/guide and the flat side snugs up against the plastic preventing it from spinning when the screw is turned. I have seen similar parts used as a guide that travels on a threaded rod/stock.

 

[kingskid1611]

I believe its a nut for sure. On that we all agree. lol

 

[Ant]

My second guess above is a truss rod washer, lol:
https://images.search.yahoo.com/search/images;_ylt=AwrTcXUjLPdUOM0ArlqjzbkF;_ylu=X3oDMTBsZ29xY3ZzBHNlYwNzZWFyY2gEc2xrA2J1dHRvbg--;_ylc=X1MDOTYwNjI4NTcEX3IDMgRiY2sDMzZyODRqZGEzMTd0aCUyNmIlM0QzJTI2cyUzRHMyBGZyAwRncHJpZAMwUE1jN2lWd1JBcVJQVW9LSFNtZDFBBG10ZXN0aWQDbnVsbARuX3N1Z2cDMARvcmlnaW4DaW1hZ2VzLnNlYXJjaC55YWhvby5jb20EcG9zAzAEcHFzdHIDBHBxc3RybAMEcXN0cmwDMTYEcXVlcnkDdHJ1c3Mgcm9kIHdhc2hlcgR0X3N0bXADMTQyNTQ4NDg2MwR2dGVzdGlkA01PVVMyMzU-?gprid=0PMc7iVwRAqRPUoKHSmd1A&pvid=xzIgLTIwNi4zbQSbVDCfsRDmNjYuOAAAAACIz3P_&p=truss+rod+washer&fr=&fr2=sb-top-images.search.yahoo.com&ei=UTF-8&n=60&x=wrt

 

[Rmeav8r]

These are often used as a "blind nut" where access is restricted. This allows the bolt to be tightened without putting a wrench on it.

 

[JHinPA]

Not strange at all. That is part of an old folding ruler (or carpenter's rule), the type made out of wood before metal tape-measure's came about. I have a couple at home in my shop. The flat part went against the measuring side of the ruler, and the rounded edge allowed it to rotate and be folded. You don't see these rulers much anymore. That's my 2¢ worth - JHinPA

 

[wainzoid]

Maybe

 

[villagenut]

Thanks all for the replies, it does make sense about what was called a "blind nut" or one that rested against a set surface to keep from spinning. I wasn't thinking it to be valuable or rarebut rather to quell the curiosity in me, I haven't seen one before but do see how it would work similar to a spring nut used with uni-strut.I still haven't found one on the net so I am not so sure it is modern. Thanks, vn

 

[Ant]

For those that don't know this is a blind fastener which some refer to as blind nut. A special tool is used to install one and they are permanent. Different than a nut insert, or the well nut thatvyou can see on the pillar in the last two photos:

 

[villagenut]

I suppose that this blind nut method works with all sorts of nut variations, just was hoping to find an example just like the dug one, that's all. Thank you all though. Will call it solved for what its purpose was.