[GreenKeys] ST-6 routine maintenance

Sat May 30 21:39:38 EDT 2020

    See:
<http://esnaproducts.com/history/>
    For the history of the elastic stop nut. ESNA seems to stand 
for Elastic Stop Nut of America
    There are other kinds of nuts with built in locking means 
such as the nuts with attached toothed washers. See:
<https://www.mcmaster.com/self-locking-hex-nuts/>
   for many examples.
    Acorn nuts are also called cap nuts. They are protective and 
also decorative.
    There are also machine screws with lock washers permanently 
attached under the flange. I don't know what these are called. 
They can be handy where screws must be placed in locations with 
difficult access.

On 5/30/2020 4:51 PM, Scott Johnson wrote:
> KEPS and SEMS, nuts and screws, respectively , with captive washers.
>
> Scott V. Johnson W7SVJ
> 5111 E. Sharon Dr.
> Scottsdale, AZ 85254-3636
> H (602) 953-5779
> C (480) 550-2358
> scottjohnson1 at cox.net
> scott.johnson at ieee.org
>
> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net> On Behalf Of Duncan Brown
> Sent: Saturday, May 30, 2020 2:25 PM
> To: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] ST-6 routine maintenance
>
> Keps nut - Right.  -never mind.
>
>
> On 30-May-20 14:08, John, W9DDD wrote:
>> A Keps nut, (also called a k-lock nut or washer nut), is a nut with an
>> attached, free-spinning star lock washer.
>>
>> Picture here:
>> https://en.wikipedia.org/wiki/Keps_nut
>>
>> John, W9DDD
>>
>> On 5/30/2020 11:58 AM, Duncan Brown wrote:
>>> There is some sort of flexible washer over the ST-6 toroids and I was
>>> careful not to tighten the screws to much.
>>>
>>> Ralph's idea of a self-locking nut is a good one.
>>>
>>> I think "Kepts nut"  was another name and must be derived from the
>>> manufacturer of these lock nuts
>>>
>>> Have fun,
>>>
>>> Duncan
>>>
>>>
>>> On 30-May-20 12:33, Scott Johnson wrote:
>>>> Technical term is “elastic stop nut”, (if you are looking for them
>>>> in a catalog or online) Colloquially known as “nylocs” (trade name)
>>>>
>>>> Scott V. Johnson W7SVJ
>>>>
>>>> 5111 E. Sharon Dr.
>>>>
>>>> Scottsdale, AZ 85254-3636
>>>>
>>>> H (602) 953-5779
>>>>
>>>> C (480) 550-2358
>>>>
>>>> scottjohnson1 at cox.net <mailto:scottjohnson1 at cox.net>
>>>>
>>>> scott.johnson at ieee.org <mailto:scott.johnson at ieee.org>
>>>>
>>>> *From:* greenkeys-bounces at mailman.qth.net
>>>> <greenkeys-bounces at mailman.qth.net> *On Behalf Of *Roy Morgan
>>>> *Sent:* Saturday, May 30, 2020 9:30 AM
>>>> *To:* Ralph Irish <w8roi at wowway.com>
>>>> *Cc:* Green Keys <greenkeys at mailman.qth.net>
>>>> *Subject:* Re: [GreenKeys] ST-6 routine maintenance
>>>>
>>>> As I remember it, what you refer to is a "self-locking" nut. It has
>>>> a usually-nylon washer shaped insert on one end, the inside diameter
>>>> of which ensures that the nut stays in place once installed.
>>>>
>>>> I remember some that had a fiber-phenolic locking part. Further,
>>>> some such nuts are made entirely of metal, the locking part is
>>>> likely threaded also but has segments that are bent inwards and
>>>> create considerable friction against the screw or bolt.
>>>>
>>>> An "acorn" nut is closed on one end and likely creates no locking
>>>> action. They create a finished appearance and may usually have been
>>>> chromed. The BC-779 used them to fasten the cover to the panel.
>>>>
>>>> Roy Morgan
>>>>
>>>> K1LKY Western Mass
>>>>
>>>>
>>>>
>>>>      On May 30, 2020, at 11:43 AM, Ralph Irish <w8roi at wowway.com
>>>>      <mailto:w8roi at wowway.com>> wrote:
>>>>
>>>>      
>>>>
>>>>      *And, if there is an occasion to remove any boards with toroids,
>>>>      consider replacing the hex nuts and lock*
>>>>
>>>>      *washers with acorn nuts, or whatever those nuts are called with
>>>>      the plastic or fiber "snubber" ...*
>>>>
>>>>
>>>> ______________________________________________________________
>>>> GreenKeys mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:GreenKeys at mailman.qth.net
>>>>
>>>>>>> Jordan Spencer Cunningham's GreenKeys Search Tool:
>>>>>>> https://teletype.net/gksearch
>>>>>>> 2002-to-present greenkeys archive:
>>>>>>> http://mailman.qth.net/pipermail/greenkeys/
>>>>>>> 1998-to-2001 greenkeys archive:
>>>>>>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
>>>>>>> http://comcents.com/tty/greenkeyssearch.html
>>>> This list hosted by: http://www.qsl.net Please help support this
>>>> email list: http://www.qsl.net/donate.html Message delivered to
>>>> duncanancy at earthlink.net
>>> ______________________________________________________________
>>> GreenKeys mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:GreenKeys at mailman.qth.net
>>>
>>>>>> Jordan Spencer Cunningham's GreenKeys Search Tool:
>>>>>> https://teletype.net/gksearch
>>>>>> 2002-to-present greenkeys archive:
>>>>>> http://mailman.qth.net/pipermail/greenkeys/
>>>>>> 1998-to-2001 greenkeys archive:
>>>>>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
>>>>>> http://comcents.com/tty/greenkeyssearch.html
>>> This list hosted by: http://www.qsl.net Please help support this
>>> email list: http://www.qsl.net/donate.html Message delivered to
>>> w9ddd at tapr.org
>> ______________________________________________________________
>> GreenKeys mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:GreenKeys at mailman.qth.net
>>
>>>>> Jordan Spencer Cunningham's GreenKeys Search Tool:
>>>>> https://teletype.net/gksearch
>>>>> 2002-to-present greenkeys archive:
>>>>> http://mailman.qth.net/pipermail/greenkeys/
>>>>> 1998-to-2001 greenkeys archive:
>>>>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
>>>>> http://comcents.com/tty/greenkeyssearch.html
>> This list hosted by: http://www.qsl.net Please help support this email
>> list: http://www.qsl.net/donate.html Message delivered to
>> duncanancy at earthlink.net
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
>
>>>> Jordan Spencer Cunningham's GreenKeys Search Tool:
>>>> https://teletype.net/gksearch 2002-to-present greenkeys archive:
>>>> http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive:
>>>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
>>>> http://comcents.com/tty/greenkeyssearch.html
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html Message delivered to scottjohnson1 at cox.net
>
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
>
>>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch
>>>> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to 1oldlens1 at ix.netcom.com

-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL