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Can someone help identify these lug bolts?

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  • Can someone help identify these lug bolts?

    I am having trouble identifying these lug bolts.

    The first picture shows a smooth head with hex inside. there is a line around the bottom of the head just above where the taper starts. The threads are 3/8-20. The
    bottom extends about a quarter inch below the threads.

    The second picture shows a hew head 9/16. The threads are 3/8-24.

    Any and all help would be appreciated. Eileenlug nut a.JPGhexlugnut1.JPG

  • #2
    I think the first picture shows '38 to '41 H-D . I'm not an expert or anything but I read it on Matt Olsen's site. Looks the same to me.
    http://oldbikesinsd.blogspot.com/201...-pictures.html

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    • #3
      Originally posted by DuoGlide62 View Post
      I think the first picture shows '38 to '41 H-D . I'm not an expert or anything but I read it on Matt Olsen's site. Looks the same to me.
      http://oldbikesinsd.blogspot.com/201...-pictures.html
      Actually it is 1936 thru 1939. Used first on the 1936 61 and on all models thru 1939 with the stepped hub.
      Be sure to visit;
      http://www.vintageamericanmotorcycles.com/main.php
      Be sure to register at the site so you can see large images.
      Also be sure to visit http://www.caimag.com/forum/

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      • #4
        I believe the bolt in the 2nd picture is Indian. It looks like the brake drum bolts in my '40 Chief.
        Eric Smith
        AMCA #886

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        • #5
          Chris,

          Wouldn't the '36 lug bolts be drilled also? And thereafter un-drilled, but with the line near the taper?
          A. Bernhardt
          AMCA# 9726

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          • #6
            I have four different examples of those bolts. Holes, no holes, groove at top, and groove at the bottom. When were they used? Can't tell from factory photos.
            Be sure to visit;
            http://www.vintageamericanmotorcycles.com/main.php
            Be sure to register at the site so you can see large images.
            Also be sure to visit http://www.caimag.com/forum/

            Comment

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