This approved grade B7 threaded stud has a temperature range of -50 to 900ƒx? for liquid and -40 to 900ƒx? for air, and a PSI of 1,25,000. This stud is size 6 3/4 x 1 1/4 inches and has a thread size of 1 1/4". Made of 4140 alloy steel. Each is sold sepa