Pressure Plate (Clutch Cover) Bolt Kit by ARP The importance of pressure plate bolts in a racing or high performance street applications cannot be emphasized nearly enough. These fasteners play a key role in both the performance and safety of a vehicle. Because of this, ARP has developed special pressure plate bolts that are application-specific to ensure the optimum grip length. ARP High Performance Series bolts are made from a premium-grade chromoly and hardened to a nominal tensile strength of 180,000 psi. Choose the thread size needed for your make and model. Features Fastener Style:Bolt Thread Size:3/8 in.-16 Fastener Material:Chromoly Fastener Finish:Black oxide Fastener Head Style:Hex head Wrench Diameter:9/16 in. Underhead Length (in.):1.000 in. Fastener Tensile Strength (psi):180,000 psi Washers Included:Yes Nuts Included:No Benefits Developed special pressure plate bolts Made from a premium-grade chromoly Hardened to a nominal tensile strength of 180,000 psi Applications 1977 – 1981 Pontiac Bonneville 1977 – 1981 Pontiac Catalina 1977 – 1981 Pontiac Firebird 1977 – 1981 Pontiac Grand Prix 1977 – 1981 Pontiac LeMans 1977 – 1981 Pontiac Parisienne 1978 – 1980 Pontiac Grand Am 1978 – 1981 Buick Century/Regal/LeSabre 1980 – 1981 Pontiac Firebird Trans Am 1980 – 1981 Pontiac Bonneville 1980 – 1981 Pontiac Catalina 1980 – 1981 Pontiac Firebird 1980 – 1981 Pontiac Grand Prix 1980 – 1981 Pontiac LeMans 1980 – 1981 Pontiac Parisienne 1980 – 1981 Buick Century 1980 – 1981 Buick Regal 1980 Oldsmobile 88 What\’s In The Box? 6 – Bolts Warranty Manufacturers Standard Warranty