Carburetor Linkage Throttle stud. The stud size is .225 diameter and .250 long from the front of stud to the hex. There is a hole for a cotterpin. That hole is .070 and is .1290 from the end of the stud. The thread side is 3/16″ diameter, with no shoulder and a thread pitch 10×32. Overall length is .778. Package is 1 stud and one nut.