Class 2A PT SP .524 .906 .524 .906 .524 .906 .524 .906 .524 .906 .524 .906 .524 .906 .650 1.125 .650 1.125 .683 1.188 Class “A” (SR), “E” (SR), “P” (SR), MS / “F” Shell C Size Thread PT00E-XX-XXX SP00E-XX-XXX MS3110E-XX-XXX .431 .431 .431 ....