What is this?

[skullhead]

Not sure if it is part of something or a tool but I feel like it is supposed to attach to something. Found it in my fathers tool box, he was a machinist if that helps.

I know the minute I toss it I'll be like, oh that's what it is for!

 

[The Cobbler]

an unfinished pipe bung is my guess

 

[RMERR]

A piece or part to a pipe threading machine?

 

[The Cobbler]

A piece or part to a pipe threading machine?

what's the ID of the center hole >

 

[Firebrick43]

Unthreaded pipe bushing. Say you want to put your DWH or boilers pop off valve into a cast iron drain, but is still easy to remove/replace the heater so you don’t need the cost/complexity of a union.

 

[skullhead]

what's the ID of the center hole >

0.867

 

[The Cobbler]

that's too large for 1/2 schedule 40 pipe

 

[Firebrick43]

Which is a slip fit over the OD of schedule 40 steel pipe

 

[Firebrick43]

that's too large for 1/2 schedule 40 pipe

It’s not designed to seal tight, just keep things from falling or crawling out of the drain pipe

 

[The Cobbler]

@Firebrick43 , gottcha now I didn't understand your previous post . it's a drain bushing

 

[Milton Shaw]

I have a set of pipe dies that have those bushing in each size as the dies. They serve as a guide bushing to start the tread straight on the pipe. This set of dies have two piece dies to fit the die stock, not single piece dies or 4 piece dies like Ridgid die heads. Each die has a mark to set the correct thread in the die stock.

 

[Muckin_Slusher]

I have a set of pipe dies that have those bushing in each size as the dies. They serve as a guide bushing to start the tread straight on the pipe. This set of dies have two piece dies to fit the die stock, not single piece dies or 4 piece dies like Ridgid die heads. Each die has a mark to set the correct thread in the die stock.

bingo (I think).

I've seen the same thing on Reed dies.