Pet Carrier Metal Fasteners Nuts Bolts Metal Nuts for airline approved Travel Kennels and Carriers 8 Steel Bolts and 8 Metal Nuts for securing Kennels Crates before travel Replacement Hardware Fasteners for Dog Kennels, Cat Carriers Universal will fit all brands Airline Required, Airline Approved Replaces missing nuts bolts screws for all plastic pet crates - Must measure for bolt-screw length requirement