Pressure Plate Bolt Kitfits Ford SB/BB 289-460 (1985 & Earlier) 5/16-18 ThreadBrand: ARPPart Number: AR150-2201Description: The Importance Of Pressure Plate Bolts In A Racing Or Hi-performance Street Application 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 Offers High Performance Series Bolts That Are Made From A Premium Grade Chrome Moly And Hardened To A Nominal Tensile Strength Of 180,000 Psi. The Pro Series Bolts, Orignally Developed For Nascar Winston Cup Competition, Are Stronger And Rated At 200,000 Psi. Both Models Feature A Large Diameter, Low-profile Design. Complete With Washers.