1/4" threaded inserts in UK

In order to build assorted camera gadgets, one
often runs into the hallowed 1/4" x 20 thread.

This is (actually) the old Whitworth standard,
but it's also used in all (smaller than medium format)
size cameras.

Since the UK has followed Europe, and most
connectors use metric threads, I am struggling
to find a source for these:

http://www.leevalley.com/wood/page.a...,43455&p=52800

Note the wide range of knobs, nuts, buts,
threaded inserts etc.

Can anyone advise me of a mail-order source
for anything similar in the UK with sane
prices (including postage)?

BugBear

bugbear wrote:
In order to build assorted camera gadgets, one
often runs into the hallowed 1/4" x 20 thread.

This is (actually) the old Whitworth standard,
but it's also used in all (smaller than medium format)
size cameras.

Since the UK has followed Europe, and most
connectors use metric threads, I am struggling
to find a source for these:

http://www.leevalley.com/wood/page.a...,43455&p=52800

Note the wide range of knobs, nuts, buts,
threaded inserts etc.

Can anyone advise me of a mail-order source
for anything similar in the UK with sane
prices (including postage)?

BugBear



A thread adapter for the camera maybe?

http://www.morrisphoto.co.uk/Product...oryid~149.html

"bugbear" wrote in message
...
In order to build assorted camera gadgets, one
often runs into the hallowed 1/4" x 20 thread.

This is (actually) the old Whitworth standard,
but it's also used in all (smaller than medium format)
size cameras.

Since the UK has followed Europe, and most
connectors use metric threads, I am struggling
to find a source for these:

http://www.leevalley.com/wood/page.a...,43455&p=52800

Note the wide range of knobs, nuts, buts,
threaded inserts etc.

Can anyone advise me of a mail-order source
for anything similar in the UK with sane
prices (including postage)?

BugBear

That link do international orders so its worth emailing them for a quote on
selected items.

Sometimes it works out cheaper to buy from the US than the UK

bugbear wrote:
In order to build assorted camera gadgets, one
often runs into the hallowed 1/4" x 20 thread.

This is (actually) the old Whitworth standard,
but it's also used in all (smaller than medium format)
size cameras.

The 1/4 -20 UNC thread used in camera mounts is an Unified National
Coarse thread having a 60 degree included thread angle with flat crest
and root forms. The 1/4" Whitworth thread has the same basic diameter
and pitch but the thread form has a 55 degree included angle with
radiused crest and root forms. The two are not the same and while the
threads may mate the strength of the mismatched threads is severely
compromised.


Since the UK has followed Europe, and most
connectors use metric threads, I am struggling
to find a source for these:

http://www.leevalley.com/wood/page.a...,43455&p=52800

Note the wide range of knobs, nuts, buts,
threaded inserts etc.

Can anyone advise me of a mail-order source
for anything similar in the UK with sane
prices (including postage)?

BugBear

On Mon, 01 Oct 2007 11:21:05 -0400, tomcas
wrote:

bugbear wrote:
In order to build assorted camera gadgets, one
often runs into the hallowed 1/4" x 20 thread.

This is (actually) the old Whitworth standard,
but it's also used in all (smaller than medium format)
size cameras.

The 1/4 -20 UNC thread used in camera mounts is an Unified National
Coarse thread having a 60 degree included thread angle with flat crest
and root forms. The 1/4" Whitworth thread has the same basic diameter
and pitch but the thread form has a 55 degree included angle with
radiused crest and root forms. The two are not the same and while the
threads may mate the strength of the mismatched threads is severely
compromised.

That's interesting information, is the 1/4-20 UNC commonly available
in hardware stores?

George wrote:
"bugbear" wrote in message

http://www.leevalley.com/wood/page.a...,43455&p=52800

Note the wide range of knobs, nuts, buts,
threaded inserts etc.

Can anyone advise me of a mail-order source
for anything similar in the UK with sane
prices (including postage)?

BugBear

That link do international orders so its worth emailing them for a quote on
selected items.

Sometimes it works out cheaper to buy from the US than the UK

Indeed. So far I don't even have a UK
source to compare to!!

I've ordered from Lee Valley before; tremendously
nice people to deal with.

But going transatlantic for a nut!?!

That's just *wrong*

BugBear

irwell wrote:
On Mon, 01 Oct 2007 11:21:05 -0400, tomcas
wrote:

bugbear wrote:
In order to build assorted camera gadgets, one
often runs into the hallowed 1/4" x 20 thread.

This is (actually) the old Whitworth standard,
but it's also used in all (smaller than medium format)
size cameras.
The 1/4 -20 UNC thread used in camera mounts is an Unified National
Coarse thread having a 60 degree included thread angle with flat crest
and root forms. The 1/4" Whitworth thread has the same basic diameter
and pitch but the thread form has a 55 degree included angle with
radiused crest and root forms. The two are not the same and while the
threads may mate the strength of the mismatched threads is severely
compromised.

That's interesting information, is the 1/4-20 UNC commonly available
in hardware stores?

Probably in the USA; it's an American standard.

BugBear

"bugbear" wrote in message
...
George wrote:
"bugbear" wrote in message

http://www.leevalley.com/wood/page.a...,43455&p=52800

Note the wide range of knobs, nuts, buts,
threaded inserts etc.

Can anyone advise me of a mail-order source
for anything similar in the UK with sane
prices (including postage)?

BugBear

That link do international orders so its worth emailing them for a quote
on
selected items.

Sometimes it works out cheaper to buy from the US than the UK

Indeed. So far I don't even have a UK
source to compare to!!

I've ordered from Lee Valley before; tremendously
nice people to deal with.

But going transatlantic for a nut!?!

That's just *wrong*

BugBear

Well buy a few pieces...you never know when you might need em. :-)

On Mon, 01 Oct 2007 17:21:55 +0100, bugbear
wrote:

irwell wrote:
On Mon, 01 Oct 2007 11:21:05 -0400, tomcas
wrote:

bugbear wrote:
In order to build assorted camera gadgets, one
often runs into the hallowed 1/4" x 20 thread.

This is (actually) the old Whitworth standard,
but it's also used in all (smaller than medium format)
size cameras.
The 1/4 -20 UNC thread used in camera mounts is an Unified National
Coarse thread having a 60 degree included thread angle with flat crest
and root forms. The 1/4" Whitworth thread has the same basic diameter
and pitch but the thread form has a 55 degree included angle with
radiused crest and root forms. The two are not the same and while the
threads may mate the strength of the mismatched threads is severely
compromised.

That's interesting information, is the 1/4-20 UNC commonly available
in hardware stores?

Probably in the USA; it's an American standard.

This has come up many times, with the inevitable pedantic
arguments. For camera purposes the two threads are
interchangeable; I have various camera-related 1/4" threaded
items and some are 1/4W and others are UNC, depending on
where and when they were made.

There certainly is a difference between the two, but it's an
insignificant one in this particular case; there is more
variation in manufacturing tolerances than in the spec
differences between the two threads. Interestingly my
pre-war Leica ball head uses Whitworth threads, as does my
modern Manfrotto 709B table-top "digi" tripod. Most other
stuff I have is UNC, but its a moot point as I said.

B&Q Warehouse used to sell 1/4W studding and SS bolts and
maybe still do (I've bought both there), and 1/4W roofing
bolts and nuts are still available in many hardware shops.

--
John Bean

"George" wrote in message
. uk...

"bugbear" wrote in message
...
George wrote:
"bugbear" wrote in message

http://www.leevalley.com/wood/page.a...,43455&p=52800

Note the wide range of knobs, nuts, buts,
threaded inserts etc.

Can anyone advise me of a mail-order source
for anything similar in the UK with sane
prices (including postage)?

BugBear

That link do international orders so its worth emailing them for a
quote
on
selected items.

Sometimes it works out cheaper to buy from the US than the UK

Indeed. So far I don't even have a UK
source to compare to!!

I've ordered from Lee Valley before; tremendously
nice people to deal with.

But going transatlantic for a nut!?!

That's just *wrong*

BugBear

Well buy a few pieces...you never know when you might need em. :-)



1/4 Whitworth nuts and bolts? Look in Dad's/Granddad's shed/garage. I have
just been in the garage and fetched my old tins down and found 1/4 Whitworth
nuts and bolts with no trouble at all. :-))

Mike
(Granddad)