TR2/3/3A Wing nuts for gauge panel on TR 3

D

DennisT

Senior Member

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• Jun 28, 2020

• #1

Hi,
Can someone tell me what size and thread are the wing nuts on the gauge panel of the TR 3? I lost mine and need to buy four new ones!
thanks,
Dennis

 

CJD

Yoda

Offline

• Jun 28, 2020

• #2

I believe they are 2BA...whitworth...and brass.

 

OP

D

DennisT

Senior Member

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• Jun 29, 2020

• #3

CJD said:

I believe they are 2BA...whitworth...and brass.

Click to expand...

Hello John,
thanks for your response
Dennis

 

Tr3aguy

Jedi Knight

Offline

• Jun 29, 2020

• #4

Haha I did not know they were wing nuts.... mine had regular nuts on them.

 

CJD

Yoda

Offline

• Jun 29, 2020

• #5

Tr3aguy said:

Haha I did not know they were wing nuts.... mine had regular nuts on them.

Click to expand...

The brass whitworth wing nuts are difficult to find. Not off the shelf items unless one of the big 3 contracted some out. Marv may have some used ones, though?!?

 

6TTR3A

Jedi Warrior

Offline

• Jun 29, 2020

• #6

I thought Triumph used US sizes wherever possible. I chased the threads with a 10-32 die
and felt no resistance at all ( & no metal shavings) so I bought 10-32 brass wing nuts at
the hardware store.

 

CJD

Yoda

Offline

• Jun 29, 2020

• #7

Funny, I always thought they used Whitworth as much as possible just to mess with us after that "revolution" thing, LOL. A few of the whitworths are close enough to retap to more standard threads. Others are not.

 

D

DavidApp

Yoda

Gold

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• Jun 29, 2020

• #8

10-32 is 32 TPI 0.190 dia and 2BA is 31.36 TPI 0.185 dia so there is almost no difference between them. It may be harder to get a 2BA to nut to go on a 10-32 bolt than a 10-32 nut on a 2 BA bolt.

David

Will save the British nut joke for later.

 

PeterK

Yoda

Offline

• Jun 30, 2020

• #9

6TTR3A said:

I thought Triumph used US sizes wherever possible. I chased the threads with a 10-32 die
and felt no resistance at all ( & no metal shavings) so I bought 10-32 brass wing nuts at
the hardware store.

Click to expand...

Same here

 

K

karls59tr

Obi Wan

Bronze

Offline

• Jun 30, 2020

• #10

Stock up on those wing nuts......I'.ve had several jump into the TR3 Black Hole of Missing Hardware. :highly_amused:

 

martx-5

Yoda

Offline

• Jun 30, 2020

• #11

I've found most of the threads smaller than 1/4" on my TR3A are BA. Mostly 2BA and 4BA. I bought some BA taps and dies from British Tools and Fasteners. McMaster has brass wing nuts (they call them thumb nuts). Get some in 8-32, then just drill and tap for 2BA.

https://www.mcmaster.com/92771A491

https://britishfasteners.com/index.php/catalogsearch/result/?q=+index+