What is it? Wrench

[Jordanj]

I guess I should have asked “who made it?”.

My friend was going through some old tool boxes and found this.
Any idea who made it or what size it is?
He hasn’t gotten back with me on the actual size of each end.

 

[madmanc]

looks like its from a motorcycle tool kit

 

[Jordanj]

Yeah I was thinking farm tractor or equipment tool kit

 

[Sevenhills1952]

The odd curve looks like this old International Harvestor wrench.

Sent from my SM-S320VL using Tapatalk

 

[Jordanj]

It does. Odd that it’s different sizes on either end.

 

[u118224]

I think both ends are the same size, 21/64.

 

[dscheidt]

It does. Odd that it’s different sizes on either end.

That's not unusual in old equipment tool kit. Solves the "I need two 21/64 wrenches" problem without increasing tool count. (I've never needed a 21/64 wrench!).

 

[VocaTexas]

If you work on old farm equipment you will run into 17/64, 19/64, 21/64, and 25/64 fairly often. Those sizes are also common on some aircraft parts made before 1950. That I DO know, but not the why.

 

[JR 42]

Thanks, I was going to ask about that.

Looks like the OP's wrench has two different sizes on it.

 

[wrenchguy]

It is IH, u can see the old style logo on it. its common with IH wrench collectors.

 

[driftpin]

If you work on old farm equipment you will run into 17/64, 19/64, 21/64, and 25/64 fairly often. Those sizes are also common on some aircraft parts made before 1950. That I DO know, but not the why.

Proprietary sizing to ensure return customers for any fasteners required?

 

[Jordanj]

It is IH, u can see the old style logo on it. its common with IH wrench collectors.

Where’s the logo?

 

[dscheidt]

If you work on old farm equipment you will run into 17/64, 19/64, 21/64, and 25/64 fairly often. Those sizes are also common on some aircraft parts made before 1950. That I DO know, but not the why.

They're USS sizes. This was the first standardized thread system used in the US. During the second world war, production efficiency drove it out of use. It
hung on for some existing uses (if you have the tooling, why change?). some electrical stuff used the smaller sizes, and Ford used it for some suspension stuff until the late 60s or so.