UNEF nuts

[VicS]

Oh for goodness sake! Unified National Extra Fine. Strange to say, I believe that a 1" x 20 thread is used for antenna mounts, but I don't know whether it's this thread pattern. I would imagine that a suitable tap could be found in the States.

Rob.

Even in the Uk http://www.engineering-supplies.com/product/12405/j-1-20-2b-unef-straight-flute-tap-hss-co-/

But it starts to make one nut look a tad expensive!

 

[pampas]

it would be about that price as bronze is now very pricey and finished nut might be more depending how the turner does his costing.

 

[PetiteFleur]

Here's a suitable tap but it is expensive! As said try a US firm.

 

[PetiteFleur]

Here's a suitable tap but it is expensive! As said try a US firm.

Here's another one cheaper http://rotagriponline.com/index.php...flypage&pop=0&option=com_virtuemart&Itemid=29

Good Luck!

 

[stuhaynes]

Not a common thread at all, in fact mainly a US one.

Even so a small precision engineering company should have no problem making a one off, consult your local yellow pages to see who is local.

Done that. Williams Bros in Sheffield. Don't have the tooling unfortunately.

 

[stuhaynes]

That's a new one on me.Where's UNEF come from then?

Unified extra fine. It was new to me too. Williams identified it but didn't have the tooling.

 

[stuhaynes]

Unified EF surely ??

Yes

 

[stuhaynes]

Oh for goodness sake! Unified National Extra Fine. Strange to say, I believe that a 1" x 20 thread is used for antenna mounts, but I don't know whether it's this thread pattern. I would imagine that a suitable tap could be found in the States.

Rob.

I'm sure you're right and I've found suppliers, but not as big as 1". Its is a pain.

 

[stuhaynes]

Even in the Uk http://www.engineering-supplies.com/product/12405/j-1-20-2b-unef-straight-flute-tap-hss-co-/

But it starts to make one nut look a tad expensive!

It's a start VicS. Thank you

 

[stuhaynes]

Here's another one cheaper http://rotagriponline.com/index.php...flypage&pop=0&option=com_virtuemart&Itemid=29

Good Luck!

Apologies, I should have used multiquote! I've bookmarked the reply. There is a local machine shop, and if it comes down to it we can at least buy a tap from the address above and get some hex bar drilled and tapped. The nut is going to be very expensive, but without it the boat is dead.

Again, sorry for clogging this thread, but thanks to everyone that's replied.

 

[halcyon]

Apologies, I should have used multiquote! I've bookmarked the reply. There is a local machine shop, and if it comes down to it we can at least buy a tap from the address above and get some hex bar drilled and tapped. The nut is going to be very expensive, but without it the boat is dead.

Again, sorry for clogging this thread, but thanks to everyone that's replied.

What material is it, does it need to be castellated, ?

For my sins, I am on a TR7/8 forum, most people in the states, so it has uses at times, we may be lucky, and just need to post a nut over.

Brian

 

[colhel]

I'd just screw cut it. Don't need a tap. About £15.00 if you want me to make it.

colin

 

[VicS]

I'd just screw cut it. Don't need a tap. About £15.00 if you want me to make it.

colin

Take up this offer.

My Dad would have made three or four in the time this thread has been running.

I once wanted a LH metric nut ( B&D Lawnraker) Initially he did not think he could do metric threads ... but it was made by the time I got home next day.

 

[colhel]

I just come back from the pub. Imagine the shock

 

[stuhaynes]

I'd just screw cut it. Don't need a tap. About £15.00 if you want me to make it.

colin

Hi Colin

Great offer. I'll probably see Roger (the boat owner) tomorrow and tell him. I'll send you a PM when I've had a word.

Many thanks, Stu

 

[halcyon]

Apologies, I should have used multiquote! I've bookmarked the reply. There is a local machine shop, and if it comes down to it we can at least buy a tap from the address above and get some hex bar drilled and tapped. The nut is going to be very expensive, but without it the boat is dead.

Again, sorry for clogging this thread, but thanks to everyone that's replied.

Also from the TR7/8 list, they are a UK part after all.

UNEF are also used on a lot of hydraulic motors. Try:

Hydrastore Ltd.
Sandtoft Industrial Estate Belton
South Yorkshire DN9 1PN
United Kingdom
tel: +44 1427 874445

Ask for a CE (400/420) SERIES MOTOR shaft nut - p/n's:
500449303 1.00-20 UNEF SOLID NUT
300339303P 1.00-20 UNEF LOCK NUT
500449304 1.00-20 UNEF SLOTTED NUT

Your choice.

These guys have relatively inexpensive unef taps and dies:
http://www.newmantools.com/taps/tapsinch.htm#nef
All the best

Brian

 

[pampas]

further to this rather interesting thread, I thought this link might be of interest

http://en.wikipedia.org/wiki/British_Standard_Whitworth

 

[colhel]

I think I've had enough of thread threads for one day

 

[VicS]

I think I've had enough of thread threads for one day

But you dont often come across one as fine as this one

 

[colhel]

But you dont often come across one as fine as this one

Very true. All the others were far more coarse