1973-1987 Chevrolet, GMC C/K Series Pickups With Steel Beds Zinc-Plated 32-Piece Kit JEGS 555-90865 Truck Bed to Frame Bolt Kit Includes:  (2) Carriage Bolts: 1/2 in.-13 x 10 1/4 in. UHL (6) Carriage Bolts: 1/2 in.-13 x 4 1/2 in. UHL Truck Bed to Frame Fastener Kit1973-1987 Chevrolet, GMC C/K Series Pickups With Steel BedsZinc-Plated32-Piece Kit JEGS 555-90865 Truck Bed to Frame Bolt Kit Includes: (2) Carriage Bolts: 1/2 in.-13 x 10 1/4 in. UHL(6) Carriage Bolts: 1/2 in.-13 x 4 1/2 in. UHL(8) Nuts: 1/2 in.-13(8) Flat Washers for: 1/2 in. bolts(8) Split Lock Washers for: 1/2 in. bolts