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  • Parallel port thread

    OK it's cold and dark here and the path down to the workshop is haunted so not going out to get my calipers and screw gauges.

    On the parallel port you have these little retaining screws that the cable screws into, any idea what thread it is as I have to make a couple of new ones about 5/8" long to take a gender changer.

    Mutzi Gratzi Penus, [ that's Spanish for thank you cock.........]


    .
    .

    Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.




  • #2
    John,
    ISTR they are a BA size? Not sure, Ill go and have a look for you (My workshop isnt haunted )

    Dave
    Just south of Sudspumpwater UK

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    • #3
      I've just checked one,and it looks to me like it's #4x40 UNC.You could probably rob the screw of an old printer connector or similar.They seem to have fairly long screws.
      Hans

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      • #4
        I just happened to have a thread gage on my desk: #4 x 40 TPI.
        "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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        • #5
          I think the male standoffs are 6-32 UNC, and I believe the the thumbscrews that are normally attached to the plug and screw into these are 4-40 UNC John.
          Not positive, but I seem to remember checking this out a couple of years ago.

          Peter

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          • #6
            Seems others know without having to go outside into the cold...

            Dave
            Just south of Sudspumpwater UK

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            • #7
              By the way John, it's the same screw that's on an RS-232 shell. Sow you can steal the screws off an old serial connector...
              "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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              • #8
                [QUOTE=Mutzi Gratzi Penus, [ that's Spanish for thank you cock.........]./QUOTE]

                Having a several Spanish biker friends I can say with some insider knowledge that it isn't !!!
                BTW Spanish swearing tends to concentrate on milk, faeces, mothers, sisters, The Virgin Mary & God in some interesting combinations.
                Mark

                Oh yes - the original question - 5BA looks pretty close.
                Last edited by old-biker-uk; 11-04-2007, 05:29 PM.
                What you say & what people hear is not always the same thing.
                www.remark.me.uk

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                • #9
                  The standoffs are metric 3.5 x .8 that is so close to 6-32 that it doesn't matter . The thumb screw thread is 4-40.
                  Free software for calculating bolt circles and similar: Click Here

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                  • #10
                    Originally posted by Evan
                    The standoffs are metric 3.5 x .8 that is so close to 6-32 that it doesn't matter . The thumb screw thread is 4-40.
                    OK Evan HOW !!! did that happen? I can't see part of the design being
                    done in China ( :-) ) and the rest in the USA. :-) Come on tell us.
                    ...lew...

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                    • #11
                      Originally posted by Evan
                      The thumb screw thread is 4-40.
                      So we now have four votes for #4-40. Anyone else?
                      "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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                      • #12
                        Originally posted by lazlo
                        So we now have four votes for #4-40. Anyone else?
                        The thumbscrews we use on feedback cables at work are 4-40. I remember someone mentioning that the male thread on the standoffs was a bit out of the norm.

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                        • #13
                          It's not really a 4-40- it's a 3.624-36
                          I seldom do anything within the scope of logical reason and calculated cost/benefit, etc- I'm following my passion-

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                          • #14
                            Thanks for that guys.
                            Need to have a look around for some taps then in #4 x 40, may have the odd one as the small numbered series never came into play here in the UK.

                            For years we were on BA sizes and then these were phased out onto metrics. About the only numbered series UN's are to be found on older imported USA made equipment.

                            There are specialised fastner companies who cater for this in standard fastners but expensive and I want something non standard.

                            .
                            .

                            Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



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                            • #15
                              How many do you need John?

                              They have bags of them at Frys for a pittance -- I'd be glad to drop some to you by US Postal Service, which is surprisingly cheap to the UK.
                              "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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