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I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of them lack nuts and washers :-(
What size are they ??
The thread is not M10 so I assume its "imperial".
M10 crinkle washers are too big.
TIA Dave
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On Tuesday 19 November 2024 09:10:30 am David Slipper via groups.io wrote: I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of
them lack nuts and washers :-(
What size are they ??
The thread is not M10 so I assume its "imperial". Probably. M10 crinkle washers are too big. Perhaps you'll find something useful in one of the references on this page: -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
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I believe the threads are 1/2-28 UNEF
On Tuesday 19 November 2024 09:10:30 am David Slipper via groups.io wrote:
> I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its "imperial".
Probably.
> M10 crinkle washers are too big.
Perhaps you'll find something useful in one of the references on this page:
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
|
From the Amphenol drawings it is 1/2" x 28.
Dan K.
On Tuesday, November 19, 2024 at 11:22:57 AM EST, Roy J. Tellason, Sr. via groups.io <roy@...> wrote:
On Tuesday 19 November 2024 09:10:30 am David Slipper via groups.io wrote:
> I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its "imperial".
Probably.
> M10 crinkle washers are too big.
Perhaps you'll find something useful in one of the references on this page:
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
|
I doubt if it's Imperial - I'm quite sure that Neil and Concelman who invented BNC were American.
73, Leon G1HSM?
On 19 Nov 2024 14:10, "David Slipper via groups.io" <softfoot@...> wrote: I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of
them lack nuts and washers :-(
What size are they ??
The thread is not M10 so I assume its "imperial".
M10 crinkle washers are too big.
TIA Dave
|
Many thanks all.
Dave
On 19/11/2024 16:32, Dan Kahn via
groups.io wrote:
toggle quoted message
Show quoted text
From the Amphenol drawings it is 1/2" x 28.
Dan K.
On Tuesday, November 19, 2024 at 11:22:57 AM EST, Roy J.
Tellason, Sr. via groups.io
<roy@...> wrote:
On Tuesday 19 November 2024 09:10:30 am David Slipper via
groups.io wrote:
> I picked up a LARGE handful of 50ohm BNC bulkhead
connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its "imperial".
Probably.
> M10 crinkle washers are too big.
Perhaps you'll find something useful in one of the
references on this page:
--
Member of the toughest, meanest, deadliest, most unrelenting
-- and
ablest -- form of life in this section of space, ?a critter
that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The
Puppet Masters"
-
Information is more dangerous than cannon to a society ruled
by lies. --James
M Dakin
|
Try 3/8-32?? Was standard for panel mtg pots back when they were US made.
sent from my Galaxy Tab A
Many thanks all.
Dave
On 19/11/2024 16:32, Dan Kahn via
wrote:
From the Amphenol drawings it is 1/2" x 28.
Dan K.
On Tuesday, November 19, 2024 at 11:22:57 AM EST, Roy J.
Tellason, Sr. via
<roy@...> wrote:
On Tuesday 19 November 2024 09:10:30 am David Slipper via
wrote:
> I picked up a LARGE handful of 50ohm BNC bulkhead
connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its "imperial".
Probably.
> M10 crinkle washers are too big.
Perhaps you'll find something useful in one of the
references on this page:
--
Member of the toughest, meanest, deadliest, most unrelenting
-- and
ablest -- form of life in this section of space, ?a critter
that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The
Puppet Masters"
-
Information is more dangerous than cannon to a society ruled
by lies. --James
M Dakin
|
If my memory is correct, I'm pushing 84, it is 3/8" 24 thread.
Leon Robinson ?? K5JLR
Political Correctness is a Political Disease.
Politicians and Diapers should be changed
often and for the same reasons.
On Tuesday, November 19, 2024 at 10:23:00 AM CST, Roy J. Tellason, Sr. via groups.io <roy@...> wrote:
On Tuesday 19 November 2024 09:10:30 am David Slipper via groups.io wrote:
> I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its "imperial".
Probably.
> M10 crinkle washers are too big.
Perhaps you'll find something useful in one of the references on this page:
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
|
If my memory is correct, I'm pushing 84, it is 3/8" 24 thread.
Leon Robinson ?? K5JLR
Political Correctness is a Political Disease.
Politicians and Diapers should be changed
often and for the same reasons.
On Tuesday, November 19, 2024 at 10:23:00 AM CST, Roy J. Tellason, Sr. via groups.io <roy@...> wrote:
On Tuesday 19 November 2024 09:10:30 am David Slipper via groups.io wrote:
> I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its "imperial".
Probably.
> M10 crinkle washers are too big.
Perhaps you'll find something useful in one of the references on this page:
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
|
visit you local hardware store look in the nut and bolt dept for the
Nut and Bolt Thread Checker or
$14.99
Price when tracked (May 07, 2023, PDT):
$27.89
Desired price:
$25.00
|
The problem with that tool is it only checks for UNC (course) threads and UNF (fine) threads.
The threads on a BNC bulkhead connector are 1/2-28 UNEF (extra fine) threads
visit you local hardware store look in the nut and bolt dept for the
Nut and Bolt Thread Checker or
$14.99
Price when tracked (May 07, 2023, PDT):
$27.89
Desired price:
$25.00
|
You won't find these at Lowes or Home Depot!
I had a heck of a time finding 1/2" 20 nuts and still looking for 1/2 - 20 Carriage Bolts (2" or maybe 1.5"
And my fancy nut checker only includes 1/2-13 and 1/2-20: ? So I doubt they have a 1/2-28 checker at Lowes or HD!
--
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Finally found my Starrett?thread gauge. Two types of BNC bulkhead mounts: the 3/8 inch is definitely 3/8-32; the 1/2 inch, which insulates the BNC shell from the panel, is 1/2 27, as near as these 90 year old eyes could tell, but 1/2- 28 was a very near fit. Just for info: the UHF bulkhead mount is 5/8-24. Norm, W6NIM
On Tue, Nov 19, 2024 at 4:58?PM C. Michael Stone via <enots123= [email protected]> wrote:
On Tuesday, November 19, 2024 at 02:50:46 PM PST, Leon Robinson < leon-robinson@...> wrote:
If my memory is correct, I'm pushing 84, it is 3/8" 24 thread.
Leon Robinson ?? K5JLR
Political Correctness is a Political Disease.
Politicians and Diapers should be changed
often and for the same reasons.
On Tuesday, November 19, 2024 at 10:23:00 AM CST, Roy J. Tellason, Sr. via <roy= [email protected]> wrote:
On Tuesday 19 November 2024 09:10:30 am David Slipper via wrote:
> I picked up a LARGE handful of 50ohm BNC bulkhead connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its "imperial".
Probably.
> M10 crinkle washers are too big.
Perhaps you'll find something useful in one of the references on this page:
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
-- Barbara Stewart 3/28/1938 - 9/26/2024 Sent from my antique Win7 desktop
|
Thanks all. Some funny stories there.
Dave
On 21/11/2024 18:43, Norm Stewart via
groups.io wrote:
toggle quoted message
Show quoted text
Finally found
my Starrett?thread gauge. Two types of BNC bulkhead mounts:
the 3/8 inch is definitely 3/8-32; the 1/2 inch, which
insulates the BNC shell from the panel, is 1/2 27, as near as
these 90 year old eyes could tell, but 1/2- 28 was a very near
fit. Just for info: the UHF bulkhead mount is 5/8-24.
Norm, W6NIM
On Tue, Nov 19, 2024 at
4:58?PM C. Michael Stone via <enots123= [email protected]>
wrote:
On Tuesday, November 19, 2024 at 02:50:46 PM
PST, Leon Robinson < leon-robinson@...>
wrote:
If my memory is correct, I'm
pushing 84, it is 3/8" 24 thread.
Leon
Robinson ?? K5JLR
Political Correctness is a Political
Disease.
Politicians and Diapers should be
changed
often and for the same reasons.
On Tuesday, November 19, 2024 at
10:23:00 AM CST, Roy J. Tellason, Sr. via
<roy= [email protected]>
wrote:
On Tuesday 19 November 2024 09:10:30 am
David Slipper via
wrote:
> I picked up a LARGE handful of 50ohm
BNC bulkhead connectors but some of
> them lack nuts and washers :-(
>
> What size are they ??
>
> The thread is not M10 so I assume its
"imperial".
Probably.
> M10 crinkle washers are too big.
Perhaps you'll find something useful in
one of the references on this page:
--
Member of the toughest, meanest,
deadliest, most unrelenting -- and
ablest -- form of life in this section of
space, ?a critter that can
be killed but can't be tamed. ?--Robert A.
Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon
to a society ruled by lies. --James
M Dakin
--
Barbara Stewart
3/28/1938 - 9/26/2024
Sent from my antique Win7 desktop
|
Apologies! I need to re-read?the original question. My thread info was for the chassis mounted BNC to soldered wire. Will have to find a BULKHEAD?BNC- BNC and measure I'm sure the bulkhead will require larger than a 3/8 inch hole. note to self: READ READ READ carefully, then understand what I just read!! Just found?a bulkhead?BNC female-female, and Starrett says it is 1/2-27. Sorry for the misinformation. Norm W6NIM
Barb Stewart, KE7HIE ?3/28/1938 -9/26/2024
OK funny story about BNC female bulkhead connectors.?
?
Some hams and shortwave listeners use BNC female bulkhead connectors to fabricate a ground window, AKA ground bulkhead. This allows you to ground the shield of all your coaxial cables at one point. you mount the bulkhead connectors in a sheet of metal and ground the sheet. Easy peasy compliance with one part of the US National Electrical Code.
?
A local ham with a Ph.D. in EE decided to build a ground window. He ordered a bunch of bulkhead connectors, bought a ~1 foot x 3 feet, 1/8 inch copper sheet. Drilled holes in it (which must have been a lot of fun), mounted his bulkhead connectors, grounded it properly, connected his coaxial cables.
?
And was confused when a nearby lightning strike fried most of his gear.
?
He used insulated BNC female bulkhead connectors.
?
Which defeated the entire concept.
?
Note: You can use SO-259, "F", TNC, RCA bulkhead connectors on your ground window.
[There are 3.5mm mono and stereo and 1/4" mono and stereo bulkhead connectors, I was on the phone with a friend who assured me "Yes Terry they exist." So I did a net search and sure enough they do exist. Which might be nice for an audio studio.]
I'd tried to explain the error of his logic but was dismissed, after all, what could a mere BS EE know?
?
?
?
-- Barbara Stewart 3/28/1938 - 9/26/2024 Sent from my antique Win7 desktop
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Leon
Gooey