Posted 7 years ago
JustBurt
(4 items)
Picked this up at a flea market last week, I have never seen anything like this before. 1/4-40 Tap, Die and extractor all in one. No manufacturer name or marking. Although it's unusual it's not really practical. Has anyone else ever seen one.
No, I have not seen that form, but I think you have a tire valve stem tap, die, and core remover. Those same tools are made as one tool today for modern tire valve stems. Your tool may be for an early inner tube as 1/4 - 40 is today an odd size.
This is not metric screw cutting die and can be very versatile for cutting screw threads needed for old items e.g. lamp fittings, silver finials etc (depending on the size - internal diameter).