NEW Head Stud Kit FORD 6.0L Powerstroke Diesel 2003-2007 F250 F350 F450 F550 SD Reviewhttp://tinyurl.com/npx6c8s NEW Head Stud Kit FORD 6.0L Powerstroke Diesel 2003-2007 F250 F350 F450 F550 SD Material: alloy steel (widely used in short track and drag racing as an upgrade of regular chrome molybdenum)Tensile Strength (A clamp load): 220,000 psiYield strength (stress at which deformation of a material occurs): 180,000 psiTorque with lube: 205 ft. /lb. Preload: 25, 730ISO Certified
