[Elecraft] K3S ground screw

[Greg Beat]

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)
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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

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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