Register now to get rid of these ads!

How many threads should be showing on a lugnut?

Discussion in 'The Hokey Ass Message Board' started by evintho, Jul 31, 2013.

  1. evintho
    Joined: May 28, 2007
    Posts: 1,704


    Basic question. The wheels are torqued down and barely two threads are showing. Is that enough?

  2. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,490

    Rusty O'Toole

    Looks ok to me. As long as all threads are engaged (bolt extends the full length of the nut) you have full strength.

    I would be more concerned that the wheel is not fully seated and the center hole is not centered on anything.
  3. Jimm56
    Joined: Aug 27, 2010
    Posts: 170


    Is there a spacer in there?

  4. belair
    Joined: Jul 10, 2006
    Posts: 8,669


    All the threads of the bolt are engaged-what else is there?
  5. Kramer
    Joined: Mar 19, 2007
    Posts: 911


    I'm wondering about a spacer also. It does not look like the wheel is fully seated.
  6. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob

    Just enough to get to the chewy center!
  7. evintho
    Joined: May 28, 2007
    Posts: 1,704


    Thanks guys! Yeah, it's got adapters/spacers.
  8. 65COMET
    Joined: Apr 10, 2007
    Posts: 3,086


    A bolt,or stud,is only as strong in length as it is in diameter,so as long as the nut has complete contact you are good.I agree with the others though,that spacer/wheel combo looks scary!! JMO , ROY.
  9. barstowpo
    Joined: Jun 27, 2012
    Posts: 232


    I was told that maximum clamping force was achieved as long as you had as many threads engaged as the nut is thick. I hope that makes sense.
  10. henry29
    Joined: Sep 5, 2007
    Posts: 2,835


    Is that wheel hot pink?
  11. raengines
    Joined: Nov 6, 2010
    Posts: 227

    from pa.

    sure doesn't look safe to me either :eek:
  12. Itchy-Pit
    Joined: May 7, 2008
    Posts: 497


    120 - 150 pounds on a touque wrench is safe in my world.
  13. Itchy-Pit
    Joined: May 7, 2008
    Posts: 497


    Then again - the wheel should be flush to the hub and drum - is there a spacer in there??
  14. evintho
    Joined: May 28, 2007
    Posts: 1,704


    Nope, it's cherry red. The camera flash makes it look pink!

    It can't be flush. That's just the way it works. Standard wheel adapter is 1" thick and bolts to the brake drum. I think it'll be safe.

  15. looks like a cast adapter 2 me, shit can the adapter and replace with a machined if ya really have 2 use 1
  16. As long as it's tight your fine,I've run the adapters many times over the years on several different cars. HRP
    Joined: Mar 22, 2006
    Posts: 2,059

    from OHIO

    I hate wheel adaptors......

    Posted using the Full Custom H.A.M.B. App!
  18. That sounds positive !!......I think it'll be safe !!!!! JW
  19. 73super
    Joined: Dec 14, 2007
    Posts: 778


    It's fine... don't let 'em scare you!
  20. Roger Walling
    Joined: Sep 26, 2010
    Posts: 1,149

    Roger Walling

    In 1969, NHRA had a rule that one complete thread should be visible at the end of the nut. ( I haven't read the book since)
  21. lakeroadster
    Joined: Nov 6, 2008
    Posts: 604

    from *

    Sure it can be done... IF the adapter is made with a stepped bore where the i.d. matches the the axle boss, and the o.d. of the adapter hub matches your wheel. It's very doable.
  22. No fucking way I'd run any adapter without it having a centering hub.
    They seem to Might work fine for 9 out of 10 guys but I wouldn't do it.
    The wheel studs aren't designed to be loaded in sheer.

    The spacers with a counter bore to accept the wheel hub centering and a corresponding lip to provide a hub for the wheel are light years ahead. They cost a few bucks more but they do everything a spacer is "supposed" to do.
  23. Your thread is enough for a lug nut thread,,we really don't need another thread about lugs nuts,,,:D

    Now pictures of lug nuts..that's another thing.:eek::D:rolleyes:;). HRP

  24. Pops1532
    Joined: Jun 19, 2011
    Posts: 544

    from Illinois

    The problem won't be the length of the lug bolts. The problem is that spacer you have. Throw those junk spacers in the scrap pile and get some good quality hub centric spacers.
  25. This is the style spacer you want

    Attached Files:

  26. oldolds
    Joined: Oct 18, 2010
    Posts: 3,139


    NHRA rules, no adapters, lug studs must protrude thru the lug nut at least the thickness of the stud. That being said you should be ok. I would rather the machined adaptes, but those are traditional.
  27. genosslk
    Joined: Feb 6, 2009
    Posts: 245


    Get rid of that spacer NOW! I'm sure you have it in there to solve a clearance problem but you are dealing with a failure at some point. When that failure happens..... and it will..... and you will have guys on here say they are safe but it breaking will cause at lease some damage but can cause a horrible accident. I lost a good car buddy to these spacers as it broke in a hard corner and the car rolled.

    Either have the rear end lengthened or get a different offset wheel to solve the clearance problem.

    Don't trust these spacers!

    my 2 cents......
  28. When I was using the older style adapters the new high tech spacers with a lip were not even thought of.

    Personally, I have the knowledge and access to the equipment where I can modify the hubs and not use spacers of any type,,it's all a matter of preference,,where you agree or not there are a lot of cars out there with the old type adapters. HRP
  29. ago
    Joined: Oct 12, 2005
    Posts: 2,199

    from pgh. pa.

    I would think that is too much torque, depending on the stud thickness and grade. 7/16"-20 grade (5) is 60 ft lbs. grade (8) is 95ft lbs. and 1/2"-20 is grade (5) is 95 ft. lbs. grade (8) 140 ft lbs.

Share This Page

Register now to get rid of these ads!


Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.