Nuts
You talking bout the acorn nuts on either side of the fender struts that hold the rear fender...?
They're just chrome acorn nuts, #7680W, ACORN NUT 3/8-16 X 25/32 X 9/16 (GRADE 2) (CHROME)
They still show available at a dealer.. Or you could probably get something similar (and cheaper!) at a hardware store..
Whether on a Heritage Springer or an FX Springer, they use the same rear fender acorn nuts... The Heritage Springer uses four, the FX Springer uses six..
Last edited by hattitude; May 28, 2025 at 09:33 AM.
You talking bout the acorn nuts on either side of the fender struts that hold the rear fender...?
They're just chrome acorn nuts, #7680W, ACORN NUT 3/8-16 X 25/32 X 9/16 (GRADE 2) (CHROME)
They still show available at a dealer.. Or you could probably get something similar (and cheaper!) at a hardware store..
Whether on a Heritage Springer or an FX Springer, they use the same rear fender acorn nuts... The Heritage Springer uses four, the FX Springer uses six..

Parts 8 and 9
No need to post the same thing 4 times.......
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OK, those are called the "seat retention nut".... they don't hold on the fenders. I suspect you are dealing with a 1997 Heritage Springer if you have that seat.
Yes, the are obsolete, so you can't get them from HD. You can keep searching eBay, hoping a set will pop up; Seat retention nut #7485 & Seat retention washer (c-clip) #7484
They are the similar to the "Seat nut Kit w/retention washers" used for the rear of the passenger pillion (#17 in the parts pic), EXCEPT they are a larger thread size. I believe you need them in a 5/16"x24 thread size but I am not sure... If you have the seat mounting studs (#5 in that pic) you can confirm or correct my assumption on the thread size.
I don't know technical term for those type of nuts. If someone knows and posts it up, you could then check for fastener supply companies to see if you can find some.
You may have to get creative and find an alternative solution. You would need something narrow profile to avoid contact with the tire.
You could just find a narrow profile nut & washer, but that would make it an absolute pain to remove the seat. It could be a temp solution while you look for a better alternative
You could go to McMaster Carr and check what they have that could work. You could look under "Welding nuts" or "Press fit nuts".
Thinking outside the box, you could use maybe "high-strength Flush-mount press-fit nuts for sheet metal". But you'd need to get the right size, have the arbor to attach them, and then they'd be permanent, but it should work..
In any case, Harley didn't make those nuts, they sourced them somewhere.. If you find out what they are called, you may be able to find a source for them...
Sorry I couldn't be more help...
Last edited by hattitude; May 29, 2025 at 09:02 AM.
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Use a zip tie to feed it up and under the fender and through the hole. That will let you get a hold of it, and pop on the C-clip.
Sometimes that design is called a Zero Clearance Thread Boss. Sometimes they are called Blind inserts. There is another term, I just can't think of it right now.
Last edited by MarlinSpike; May 29, 2025 at 10:49 AM.












