PART NO. THREAD DIMENSIONS E A L S2 9F-04 9/16"X18 8.5 18 19 9F-06 11/16"X16 10 22 22 9F-08 13/16"X16 11 24 27 9F-10 1"X14 13.5 28 30 9F-12 1.3/16"X12 15 30 36 9F-16 1.7/16"X12 15 32 41 9F-20 1.11/16"X12 15 32 50 9F-24 2"X12 16 33 60