Brand: ARP Manufacturer's Part Number: 255-1002 Part Type: Camshaft Bolts Product Line: ARP Cam Bolts Automotive Fittings Part Number: ARP-255-1002 UPC: 672036011468 Fastener Material: Chromoly Fastener Color: Black Fastener Style: Bolt Fastener Head Style: 12-point Thread Size: 7/16 in.-14 Quantity: Sold individually. Notes: Pro Series 200,000 psi tensile strength. Description: End your camshaft timing worries! High-quality ARP cam bolts have increased preload clamping force to ensure positive timing gear register. Their increased material strength overcomes valvetrain harmonics and stress. These cam bolts have a reduced head size that makes installation and removal easier. They are available in 170,000 psi high performance kits and 190,000 psi Pro series kits.