Lowell RGH40 Gangable Rack Hardware, 40-Piece

RGH-40 is the bag of ganging hardware for joining gangable rack sections into one run. It holds 40 pieces of 1/4-20 by 5/8-inch hex and kep nuts - the kep nut's captive washer is what keeps a ganged joint from working loose under vibration.

It is consumable hardware rather than a rack part: order it with the racks, and keep a spare bag on the truck for the pieces that end up on the floor.