What Size T-Nuts Does The Adarac M-Series Custom Truck Bed Ladder Rack Accept?
Updated 12/09/2025 | Published 11/18/2025
Question:
What size t-nuts and hardware do these rails accept? I havent found the answer anywhere. Part numbers or links would be helpful. Going down the t-slot rabbit hole there are hundreds of sizes and options depending on the extrusion type. Any guidance is appreciated.
asked by: Randall S
Expert Reply:
Hello again, Randall, thanks for reaching out. I looked everywhere and I also was not able to find the exact T-slot size listed anywhere. I do know the bars use standard T-slots, so any accessory that is also made for standard T-tracks should work without issue. The Adarac bars use either 1/4 in or 3/8 in square-nut T-slot hardware. If you reach out directly to Adarac, they may be able to tell you, but they definitely don't list that spec anywhere in their literature.
Product Page this Question was Asked From
Adarac M-Series Custom Truck Bed Ladder Rack - Aluminum - Matte Black - 500 lbs
- Ladder Racks
- Truck Bed
- Fixed Rack
- Crossbar Rack
- Tonneau Compatible
- Mid-Cab Height
- 500 lbs
- Over the Bed
- No Drilling Required
- Adarac
more information >
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on Ladder Racks
Jesse M.
12/8/2025
Hey Randall, were you able to confirm the T-slot size with Adarac for your M-Series ladder rack? Knowing what you found could help others trying to match hardware for the same bars.