PART NO. THREAD DIMENSIONS E F A B L S1 1J-04H 7/16"X20 7/16"X20 14 14 34 17 1J-05H 1/2"X20 1/2"X20 14 14 34 19 1J-06H 9/16"X18 9/16"X18 14.1 14.1 34.2 22 1J-08H 3/4"X16 3/4"X16 16.7 16.7 42 27 1J-10H 7/8"X14 7/8"X14 19.3 19.3 46.5 30 1J-12H 1.1/16"X12 1.1/16"X12 21.9 21.9 54 36 1J-14H 1.3/16"X12 1.3/16"X12 22.6 22.6 56 38 1J-16H 1.5/16"X12 1.5/16"X12 23.1 23.1 57 41 1J-20H 1.5/8"X12 1.5/8"X12 24.3 24.3 62 50 1J-24H 1.7/8"X12 1.7/8"X12 27.5 27.5 70 55