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  1. #1

    Question 3/8 plate steel and dom tubing

    I am mounting 3/8 plate steel inside frame of my 1975 F250 to install power steering,I am using dom tubing as back spacers against frame.Four 9/16 bolts pass threw the PS box,threw the 3/8 plate and threw the dom tubing existing the back side of frame with welded plate.My question is what size dom tubing would I need for 9/16 grade 8 bolt to pass threw the tube.What wall thickness should i use.Thanks in advance to someone with this expierence

  2. #2
    Join Date
    Sep 2005
    Salem ,Ohio

    Cool pg 14
    You would need 1/2" sch 80 and a 9/16" drill because the pipe would be a little small on the id. or 3/4" sch 80 and it will be a little sloppy. I can drill you some bushings...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.

  3. #3
    Join Date
    Feb 2007
    West Farmington, OH


    Bob is right you're going to have them custom made to fit a 9/16 bolt. Don't forget to allow for some shrinkage when welding them to the frame, either that or have a drill or reamer to go through them post welding. When I do projects that require bushings like this I usually bore them 1/64 undersize then weld them and follow with a reamer after welding.
    Blondie (Owner C & S Automotive)

    Colt the original point & click interface!

    Millermatic 35 with spot panel
    Miller 340A/BP
    Victor O/A torches
    Lincoln SP125
    Too many other tools to list

    03 Ram 1500
    78 GS1000
    82 GL1100 Interstate

  4. #4

    Default experince

    Thankyou Guys!

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