Set of (26) custom length 14mm head studs for use with a War Head. These studs feature rolled-formed threads and are made from H11 Tool Steel. They feature a standard 14mm x 2.0mm thread for the block and a 9/16″ fine threaded upper for excellent clamp load on the cylinder head. This set comes complete with (26) studs, (26) ARP 12 point 9/16″ 8620 nuts, and (26) hardened washers.
For moderate 1500 HP fire-ringed Cummins applications, these studs have proven to provide reliable clamp load with as little as 150 ft-lbs torque which minimizes block distortion for wet block applications. For extreme 2000+ HP fire-ringed Cummins applications with soild blocks, we’ve had excellent results with 165 ft-lbs to 175 ft-lbs torque. In destructive stud testing, these studs started pulling threads from the block at 220 ft-lbs with zero stud failures.