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bolt and setscrew part no. demystified

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    bolt and setscrew part no. demystified

    If any cares to know how to tell a bolt size from the part no. Someone gave me this: I have a copy of the standard triumph hardware book and my parts catalog uses the sames numbering system

    HU754 would be UNC.
    HU indicates a set screw
    UNC threads commence from HU750. HU754 would be 1/2" long (4 x 1/8)
    HU704 would be UNF and 1/2" long.
    HU714 would be 1.75" long (14 x 1/8)
    HU764 would be UNC and 1.75" long. (764-750=14. 14 x 1/8 = 1.75)


    The bolts with HB I recall uses the same numbering system.

    I parted out a Stag and have a box of bolts and setscrews. For Stag no.2 at least the engine and box, I'm trying to use the correct size wherever possible.
    Sujit



    #2
    This is something that Julian Leyton published on here several years ago:

    Bolt sizes etc.docx
    I only do what the voices in my wife’s head tell me to do!

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      #3
      Standard Triumph Hardware Catalogue is in the Technical Section
      If you can't say something nice, don't say it !

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