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  • [QUOTE=pitch;19227]Mach and stud are not the same thing.
    MACH is a machine bolt which has a Head usually hexagonal and can be supplied with or without a single nut

    A stud has no head and can be supplied with or without a single nut

    Studbolt has no head and is usually supplied with 2 nuts.

    When it comes to PDMS bolting, try not to think of the BTYP as being relative to a specific type of bolt. Rather think in terms similar to STYP in piping specs.
    The difference is that in a BOLTSPEC the BTYPes have an order of priority.
    If one side of a joint has a btyp of MACH and the other side has a btyp of STUD Then STUD will take priority over MAC and the bolt with the BTYP STUD in the spec will be used.

    I have already posted a paper on bolting on this site. Try to read it and see if that helps a little

    Thanks Pitch for your answers.

    I have been in pulp and paper for 20 year with piping and have never seen jacking bolts.

    Regarding the bolting I think that I was not so good in explaining my quest.
    I know the different in the reality between STUD and MACH.

    Regarding the rest of the types I was thinking it as a specific type of bolt not only as a selection priority in bolt spec.

    THANKS PITCH :thumbs_up:
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  • [QUOTE=pitch;19227]Mach and stud are not the same thing.
    MACH is a machine bolt which has a Head usually hexagonal and can be supplied with or without a single nut

    A stud has no head and can be supplied with or without a single nut

    Studbolt has no head and is usually supplied with 2 nuts.

    When it comes to PDMS bolting, try not to think of the BTYP as being relative to a specific type of bolt. Rather think in terms similar to STYP in piping specs.
    The difference is that in a BOLTSPEC the BTYPes have an order of priority.
    If one side of a joint has a btyp of MACH and the other side has a btyp of STUD Then STUD will take priority over MAC and the bolt with the BTYP STUD in the spec will be used.

    I have already posted a paper on bolting on this site. Try to read it and see if that helps a little

    Thanks Pitch for your answers.

    I have been in pulp and paper for 20 year with piping and have never seen jacking bolts.

    Regarding the bolting I think that I was not so good in explaining my quest.
    I know the different in the reality between STUD and MACH.

    Regarding the rest of the types I was thinking it as a specific type of bolt not only as a selection priority in bolt spec.

    THANKS PITCH :thumbs_up:
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