[GreenKeys] ST-6 routine maintenance

[Scott Johnson]

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" ...

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