Replacement M6 stainless steel bolt and rectangular brass nut for Fishyak accessory mounting tracks.
Fishyak Track Nut & Bolt
These will work on any track on boats or kayaks with an internal depth of 7 or more mm, and internal width of 14mm or more. We use these to assist in mounting fishing rod holders and fish finders to the Fishyak Maverick and Viper fishing kayaks, as shown below: