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Number 4BA Brass Nut

Discussion in 'Wanted' started by texasSlick, Jan 21, 2019.

  1. texasSlick

    texasSlick VIP MEMBER

    Joined:
    Jan 2, 2013
    Need one (1) Number 4 BA brass nut as used on Lucas Ammeters.

    Slick
     
  2. eskasteve

    eskasteve VIP MEMBER

    Joined:
    Sep 24, 2012
    I don't have the brass nut that you need but if you require any pop rivets, then boy oh boy am I your guy. Due to a recent windfall I am pop rivet phat.
     
  3. PeterJoe

    PeterJoe

    Joined:
    Dec 8, 2011
    I think I have what you're looking for however, the brass nuts that are used in my Lucas motorcycle ammeters are #2 BA. If that is what you are looking for, private message me your address and I will send the nut to you.

    Peter Joe
     
  4. texasSlick

    texasSlick VIP MEMBER

    Joined:
    Jan 2, 2013
    Thank you Peter Joe.

    #4BA are about 0.142" outside thread diameter (as measured over a screw). #2BA are 0.185" outside thread diameter. If you would measure what you have, report back, then we will take it from there.

    Slick
     
  5. PeterJoe

    PeterJoe

    Joined:
    Dec 8, 2011
    The brass nut that came off my ammeter is definitely a #2BA. However, I do have a zinc plated steel #4BA nut that you can have. If this nut is going to be used for mounting the ammeter as an option you can get brass 4-40 thread thumb nuts from McMaster Carr and redrill and tap the nut for a #4BA.

    Peter Joe
     
  6. texasSlick

    texasSlick VIP MEMBER

    Joined:
    Jan 2, 2013
    Thanks again Peter Joe.

    The nut is for the electrical stud on the ammeter and should be brass. I can get #4BA zinc plated steel from British Fasteners, but not brass.

    I can get 25 brass #4BA from the UK for about $8 plus another $8 for shipping ...... makes for a very expensive nut. And having 24 additional nuts in my inventory that I will likely never use will aggravate me.:mad:

    I will keep looking. Maybe I will find the da#m nut I dropped on the floor which rolled into some cranny.

    And yes, I can tap out a 4-40 or 6-32 brass nut. The nut is cheap, but a 4BA tap plus shipping will be about the same as 25 nuts from the UK, and a tapped out nut is a bodge.

    I really appreciate your attention to helping me in this issue. Thanks again.

    Slick
     
  7. PeterJoe

    PeterJoe

    Joined:
    Dec 8, 2011
    Slick,

    I had a small piece of 1/4 inch hexagon brass bar and I quickly whittled out three #4BA brass nuts. 1/4 inch hexagon is just a little bit bigger than a 4BA nut however a 4BA wrench or socket still fit on them. But I did go ahead and polish the flats a little bit so that a 4BA wrench now fits more easily. If you are interested let me know and I will send them out to you. If not, I will throw them in my assorted BA nuts and screw bin. Here's a picture:

    [​IMG]


    Peter Joe
     
  8. texasSlick

    texasSlick VIP MEMBER

    Joined:
    Jan 2, 2013
    Thank you, Peter Joe!

    Yes, I will gratefully take one, or two for a spare!

    PM with snail mail address sent!

    Slick
     
  9. bad_friday

    bad_friday

    Joined:
    Mar 23, 2012

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