ho bolster screw size

Discussion in 'HO Scale Model Trains' started by Gary60s, Aug 6, 2007.

  1. Gary60s

    Gary60s New Member

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    As an N guage guy I know nothing about HO, but I am building an HO car for a friend and need to know the screw size for the bolster. According to NMRA standard for the RP-23, the screw size is #2-56.
    Is this the screw size that most of you use? Think he's going to use Athearn trucks.
  2. 60103

    60103 Pooh Bah

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    I use it.
    However, most kits have a little piece like short tubing that goes from the body bolster into the track bolster and the screw goes into this -- that keeps the screw from being done up too tight and keeps the screw threads from rubbing on the truck bolster.
    So a 2-56 screw by itself probably won't be enough to fill the hole.
    Mantua used to provide a screw with an extra wide head; their truck hole was bigger and the body "tubing" was a bit thicker.
  3. Gary60s

    Gary60s New Member

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    Hey, thanks for reply David
  4. TruckLover

    TruckLover Mack CH613 & 53' Trailer

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    I have to thank Gary for building this car for me. To answer you question/comment about what trucks Ill be using, your right about me using Athearn trucks :thumb: :mrgreen:

    Thanks again man :cool:
  5. Gary60s

    Gary60s New Member

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    lol...shadow wants one too! got a 3' by 5' piece of plastic...:razz:
  6. Russ Bellinis

    Russ Bellinis Active Member

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    Athearn trucks are made to fit a #2-56 screw. I think the kits actually have a self tapping sheet metal or wood screws included for the trucks, but I tap them for #2-56 when I build one.
  7. TruckLover

    TruckLover Mack CH613 & 53' Trailer

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    hehehe so Lyle heard about it in chat? :mrgreen: