Cargo box mounted on flush aero bars using T-slot bolts

Cargo box mounted on flush aero bars using T-slot bolts yakima t slot bolts T-slot bolts seem to be standardized across all rack brands, and use standard M6 threading, so it shouldn't matter if you buy Yakima, Thule or yakima smartslot kit 2 Product Size: M8 T Bolt base size 35X20X4mm with 26mm Thread , Nylon Locknut: M8, Spring washer:M8, Mudguard washer:

yakima smartslot kit 2 T-slot bolts seem to be standardized across all rack brands, and use standard M6 threading, so it shouldn't matter if you buy Yakima, Thule or

yakima smartslot kit 1 etrailer Review of Yakima Replacement T-Bolts With Nut For Rack And Roll Trailer Yakima Roof Basket Parts - T Slot Adapter