Buy a set of our bed accessory mounts, or a bed rack second hand and it was missing some of the mounting hardware?
We now offer our bed rail hardware separately for just such an instance.
Solid in pairs of hardware: 2) T-nuts, 2) 3/8 grade-8 bolts, 2) washers included. Buy in additional quantities to get the total number you need for things like bed racks or cargo bars.