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  1. #1
    Join Date
    Nov 2008
    Posts
    11

    Default 2" receiver hole size

    Building a winch adapter to fit in my 2" receiver. I know the hitch pin is advertised as 5/8", but is 5/8" really the drill size used to make the hole or is a slightly larger drill actually used by the industry?

  2. #2
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,885

    Cool

    5/8" is the standard. Maybe yours has some powder coat in the hole...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
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  3. #3
    Join Date
    Jan 2009
    Location
    cranbrook b.c canada
    Posts
    2

    Default

    if the pin is 5/8 then the hole needs to be bigger than 5/8 like 35/64or 11/16

  4. #4
    Join Date
    Feb 2009
    Location
    Island Falls Maine
    Posts
    562

    Default open er up

    drill the hole 11/16 just so you know shell fit. wont hert it any being a little on the big size.

  5. #5
    Join Date
    Sep 2008
    Location
    Toronto, CAN
    Posts
    52

    Default Hitch Receiver pin size

    Hi,
    I have a front hitch on my Exploder and had to weld a license plate holder together, cops told me to get her done. 5/8" drill did the trick for me with paint on it. 1/32" bigger won't hurt with paint on it.
    Trailblazer 325 EFI
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    AC-225 Arc Welder

  6. #6
    Join Date
    Feb 2005
    Location
    N.E. SD
    Posts
    1,377

    Default

    So, you have the receiver, right? And it has the hole in it, right?
    Jeff

  7. #7
    Join Date
    Nov 2008
    Posts
    11

    Default

    Quote Originally Posted by J hall View Post
    So, you have the receiver, right? And it has the hole in it, right?
    Yes, but the hole is well used. I measured 3 receivers, two hitches and 3 hitch pins. All had different numbers, but since they are all used and may have wear, I thought I would ask. I thought some full time fabricator might read the question and know the answer.

  8. #8
    Join Date
    Jan 2007
    Location
    lexington,Ky
    Posts
    528

    Default

    we drill all the ones we make 1/64 over 5/8 works for us.

  9. #9
    Join Date
    Feb 2008
    Posts
    835

    Default

    In structural steel applications, the hole drilled has 1/16" larger diameter than the nominal bolt size. For example, a 3/4" bolt would be drilled 13/16." And the calculations of the connection strength figure a hole 1/8" larger than the nominal bolt diameter to include an additional 1/16" of damage that can happen in drilling and punching operations (AISC D3.2).

    However, this practice is necessary mainly due to multiple bolt connections where alignment of all bolt holes would be impossible (due to fabrication tolerances) if each hole were drilled exactly the nominal diameter of the bolt used).

    That said, diameter you drill the pin holes depends on the tolerance of the hole location... the more slop, the larger the hole needs to be to accommodate it. At a minimum, add 2 times your location tolerance to the diameter.

    If you can locate AND DRILL the center within 1/64", then add 1/32" to 5/8". Or just drill it 11/16" and use the standard the steel industry does.
    Equipped with red and blue... and red and green!
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  10. #10
    Join Date
    Feb 2005
    Location
    N.E. SD
    Posts
    1,377

    Default

    Quote Originally Posted by thito01 View Post
    Yes, but the hole is well used. I measured 3 receivers, two hitches and 3 hitch pins. All had different numbers, but since they are all used and may have wear, I thought I would ask. I thought some full time fabricator might read the question and know the answer.
    Now I see where you were headed!
    Jeff

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