We do have plenty of replacement dowel nuts like the Replacement M6 x 16 mm Dowel Nut for Rhino-Rack Accessories # RR56TB which are M6 x 16 mm threaded that could work for you, however in order to determine which dowel nuts you need I am going to need to know what size you need.
If you can get that information back to us, we'd love to help you out. view full answer...