Will The Rhino Rack M6 Nuts RR96TB Work With The T-Slots On My Truck Cap?

Updated 10/19/2026 | Published 10/18/2026

Question:

Hi I want to use this for my topper T slot railing to attach my cross bars. will this be strong enough?

asked by: Froy

T-Slot On Truck Topper
(click to enlarge)

Expert Reply:

Hi Froy!

The Replacement M6 30 mm x 25 mm x 5 mm Zinc Nut for Rhino-Rack Accessories - Qty 10 # RR96TB are designed to hold towers/legs in a T-Slot so they will be strong enough, but I must admit to never having seen anything like what you have before. That said, you will want to measure your T-Slot to see if these will work for you.

If you check out the first image I have included, you can see these measure 30mm x 25mm, so you will need to make sure the gap between your T-Slot is right about the same size (2nd image). If you get a lot more than that, or less for that matter, let me know and I can see if we have a better option for you.

Out of curiosity, what kind of truck cap do you have? And are those tracks what came on it?

expert reply by: Lazer S