This approved grade B7 threaded stud is size 8 1/2 x 1 1/8 inches, has a thread size of 1 1/8", and is made of 4140 alloy steel. This stud has a temperature range of -50 to 900ƒx? for liquid, -40 to 900ƒx? for air. With a PSI of 1,25,000, each is sold se