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Burke T-bolt Stud Diameter

Discussion in 'BURKE-US MACHINE TOOL & BARKER MACHINES' started by Glenn Brooks, Nov 9, 2016.

  1. Glenn Brooks

    Glenn Brooks H-M Supporter - Premium Content H-M Supporter-Premium

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    hi all, I am making up some t nuts for my Burke #4. (Single slot table). Didn't come with any... Anyway, is there a preferred or standard size stud diameter to use when drilling and taping the T Nuts?

    I make the possible range of studs from 3/8" to 7/16". 3/8" Seems a bit lite weight for good work holding and 7/16" seems a tad big for the diminutive size of the t nut.

    I really only want to drill and tap these out one time...!

    (Edit: since I posted, I found Marks burke thread where he mentions using 3/8 x16 threaded studs for work holding. So will go with that, unless someone advises a better size. )

    Thanks

    Glenn
     
    Last edited: Nov 10, 2016
  2. Nels

    Nels United States Founder Staff Member H-M Supporter-Premium

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    Glen, I will measure one of mine for you today when I get home.

    3/8 does sound right though.
     
  3. Glenn Brooks

    Glenn Brooks H-M Supporter - Premium Content H-M Supporter-Premium

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    Thanks Nels!
     
  4. dgehricke

    dgehricke United States Active User H-M Supporter-Premium

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    Glenn,
    I use 5/16 , ¼ and ⅜ It depends on what I am working on.
    A word of caution don't over tighten with any thing these tables are known for blow outs from over tightening hold downs.
    I found a bunch of diesel engine 5/16 bolts and injector hold downs perfect for holding vise or tooling plate also put some paper under your set ups to prevent slipping
    dgehricke
     
  5. Glenn Brooks

    Glenn Brooks H-M Supporter - Premium Content H-M Supporter-Premium

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    Thanks dgehricke, think I will start with 3/8 and maybe do a couple of 1/4" with mini clamps to experiment.

    Glenn
     

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