Which Lug Nuts To Use on 17.5" Trailer Wheels

Updated 03/15/2025 | Published 10/17/2020

Products Featured in This Question

Chrome Trailer Wheel Lug Nut - 1/2" (Each)

(1005)

$5.90

Flange Wheel Nut - 5/8"

(36)

$13.63

Question:

I bought 17.5 steal wheels and tires for my fithwheel from E-Trailor the holes in wheel are flat can I use my original lug nuts that have a taper to them

asked by: Bob P

Expert Reply:

You can't use conical/tapered lug nuts like the # 12CLN on wheels with flat bolt seats; instead you'll want to use a lug nut with a flange like the Flange Wheel Nut - 5/8" # 95188.

If you can tell me which wheels you've got and the lug bolt size, I can confirm this is the correct part for you.

expert reply by: Erik B

Phil

3/15/2025

I have bought 17.5 inch steel wheels for my fifth wheel. These are 8 lug 9/16 studs. Should I use cone style lug nuts or flat? Thanks

Robin H.

3/15/2025

@Phil that depends on the wheel design. I would take a look at the bolt holes and see if it looks like the cone style would fit. If it isn't obvious I would check with the manufacturer or look at the product page you ordered it from to see if it is listed.