[GreenKeys] ST-6 routine maintenance

[Duncan Brown]

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