Help with identification and sizing

[ziggar]

Afternoon Gents and Ladies
Yesterday I went to a booty and happened upon these items and thought they would be of some use in the workshop somehow.
They have a normal tapping thread at one end and the other end is simply bent over at 90˚.
Anybody know what they're called and does anyone know how to identify the various sizes ?
If i try to rub the rust off the shaft then any sizing marks underneath are going to be rubbed away too.
Any help greatly appreciated
Thanks

Z

 

[Jasonb]

Nut machine taps

http://www.model-engineer.co.uk/forums/postings.asp?th=64811

 

[ProdEng]

The taps are from an automatic nut tapping machine, the nuts pile up on the shank, are pushed around the corner and fall off.

 

[ziggar]

The taps are from an automatic nut tapping machine, the nuts pile up on the shank, are pushed around the corner and fall off.

Hey , Thanks
interesting