The weirdest tap I have ever seen

[Braeden P]

Got this from an antique store why is it this way

 

[Nogoingback]

British Standard Pipe straight. There's also a tapered version. Whitworth threads.

 

[Braeden P]

British Standard Pipe straight. There's also a tapered version. Whitworth threads.

Yeah I know that but why is the shank not round is my question I just bought a useless tap though

 

[darkzero]

That's an odd shank (if you can call it that) that I've never seen before. Heck I would have bought that no matter what the thread size is.

I know Sakai is a city in Japan but a quick search came up with this. Sakai Threading Tool Co.

Not much info on their site & I have no idea if that's the same manufacturer as your tap. I couldn't find anything about what drives this type of shank. I'm curious what the tool looks like, like is it made to go in a machine or are there hand wrenches for them?

 

[FOMOGO]

Might be for a specific ratcheting tap handle. Mike

 

[mmcmdl]

Yeah I know that but why is the shank not round is my question I just bought a useless tap though

Because that's what we do !

 

[talvare]

Just a WAG, but maybe it's not a tap but a go/no-go gauge.

Ted

 

[Ulma Doctor]

the lack of cutting edges indicates gauge instead of tap