[Elecraft] K3S ground screw

[Victor Rosenthal 4X6GP]

I employed human intelligence and ran up to my shack. K3 serial no. 
00007 has a 6-32 grounding screw.
Remember, AI provides what it thinks is the most probable series of 
words as an answer. It does not have a concept of 'truth' like ours. And 
it's excessively sure of itself.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco

On 23/08/2025 20:29, Main Account via Elecraft wrote:
> It depends on which AI you ask. Per Grok:
> 
> Bill, the ground screw on the Elecraft K3 transceiver’s rear panel
> is a 6-32 thumbscrew. It measures 1/2 inch long with a 3/8 inch
> diameter knurled head (part number E700070). This secures the ground
> connection using two #6 flat washers.
> 
> 73, Bill WE5P Comfortably Numb
> 
>> On Aug 23, 2025, at 12:57, Jack Brindle via Elecraft
>> <elecraft at mailman.qth.net> wrote:
>> 
>> Interesting. Perhaps AI isn’t all it is being touted.
>> 
>> According to the K3S Manual, the ground screw is a #6-32
>> thumbscrew, Elecraft Part Number E700070.
>> 
>> As I recall, it is at least 1/2” in length (probably 3/4”), but it
>> has been a long time since I had the ground screws out of my K3s. 
>> It also has two #6 flat washers on the shaft.
>> 
>> I would note that the same thumbscrew is used on other Elecraft
>> products.
>> 
>> 73, Jack, W6FB
>> 
>>> On Aug 23, 2025, at 11:22 AM, Greg Beat via Elecraft
>>> <elecraft at mailman.qth.net> wrote:
>>> 
>>> The ground screw for the Elecraft K3S is a 4-40 (SAE) threaded
>>> screw. A 4-40 screw has a number 4 diameter and 40 threads per
>>> inch.
>>> 
>>> Although the exact length can vary depending on what you are
>>> connecting, the manuals (Elecraft) often refer to using 1/4" or
>>> 3/16" screws of this type for internal assembly. For a ground
>>> connection, you would use an appropriately sized lug and wire
>>> that matches the screw's thread (Elecraft #E770091)
>>> 
>>> Answered by: Gemini, Google’s Artificial Intelligence (AI) *** 
>>> Assistance by W9GB, supplying e-mail ISP.
>>> 
>>> Elecraft P/N E770091 : 33 foot Ground Wire with Lug. https://
>>> elecraft.com/products/e770091_e77009133-ground-wire-with-lug
>>> 
>>> == Date: Sat, 23 Aug 2025 10:27:13 -0400 From: Bill DeVore
>>> <maxrcul at gmail.com> To: elecraft at mailman.qth.net Subject:
>>> [Elecraft] K3S ground screw
>>> 
>>> Does anyone know the specs on the grounding screw? Dia, pitch
>>> and length? Bill - W3PNM 
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>> 
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