Oops. E700070.
> On Aug 23, 2025, at 12:59 PM, Jack Brindle via Elecraft > <elecraft@mailman.qth.net> wrote: > > That makes sense. The chassis screws for the K3 family are 4-40. Perhaps that > is what the original AI request actually answered. > > I pulled the assembly manuals and internal assembly docs. The ground screws > for the K3 and K3S all use part nr E600070, which is a 6-32 thumbscrew. > > So, for the OP, you can contact the support folks in Watsonville and get them > to send you one of these (for a small fee I assume), or perhaps find one at a > good hardware store. I find that Ace hardware has an excellent supply of all > sorts of screws, perhaps even these. Otherwise, we probably purchase them > from Mouser or DigiKey. > > 73, > Jack, W6FB > Elecraft Engineer from way back, now retired. I still maintain the KPA500, > KRC2 and W2 firmware… > > >> On Aug 23, 2025, at 12:29 PM, Main Account <bwea...@weaver-net.net> 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@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@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 <maxr...@gmail.com> >>>> To: elecraft@mailman.qth.net >>>> Subject: [Elecraft] K3S ground screw >>>> >>>> Does anyone know the specs on the grounding screw? >>>> Dia, pitch and length? >>>> Bill - W3PNM >>>> ______________________________________________________________ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:Elecraft@mailman.qth.net >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> Message delivered to jackbrin...@me.com >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to weave...@usermail.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jackbrin...@me.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
