Acorn Nut Size

[Jim Bronson]

Can someone tell me the size of the acorn nut for the upper shock bolt on a '13 Dyna Super Glide?
TIA

[FSG]

P/N 8185  .....  pretty sure it's 1/2-20   (that said -20 looks to bee too fine for the stud ?)

as you know it fits this thing

[Jim Bronson]

Yep, I just need the size. 5/16 I think.

[hattitude]

My 2016 Dyna Low Rider shows it uses the same acorn nut #8185 and stud #54666-08 as mentioned above...

I had one of my shocks off about two weeks ago, and I'm pretty sure I used my 1/2-13 thread chasers to clean up the stud threads and acorn nut before reassembly...

[FSG]

I'm pretty sure I used my 1/2-13 thread chasers

I'm a long way from home so cant check any further ......  but if I graphically cut and rotate a section of the stud and use it to count threads then I come up with 6 and a bit which makes 1/2-13 very near if not right on the money   

[Jim Bronson]

Thanks for the replies. I think I'll take the old one to Home Depot. They have various sized studs in a display next to the hardware section so customers can check nut sizes before buying.

[Breeze]

Pick up a bolt gauge card while you're in Home Depot. That & a pitch gauge are two must haves in a shop.