8D Aluminum Series Dimensions Receptacle type 0 shell size MS shell size 9 A 11 13 15 17 19 21 23 25 B C D E F G H J A Max B Max C Max 20.90 10.60 2.50 .823 .417 .098 20.90 10.60 2.50 .823 .417 .098 20.90 10.60 2.50 .823 .417 .098 20.90 10.60 2.50 .823 .417 .098 20.90 10.60 2.50 .823 .417 .098 20.90 10.60 2.50 .823 .417 .098 20.10 11.40 3.20 .791 .449 .126 20.10 11.40 3.20 .791 .449 .126 20.10 11.40 3.20 .791 .449 .126 D Thread E F G H J M 12x 1-6g 23.80 18.26 15.09 3.25 5.49 .937 .719 .594 .128 .216 M 15 x 1-6g 26.20 20.62 18.26 3.25 4.93 1.031 .812 .719 .128 .194 M 18 x 1-6g 28.60 23.01 20.62 3.25 4.93 1.126 .906 .812 .128 .194 M 22x 1-6g 31.00 24.61 23.01 3.25 4.39 1.220 .969 .906 .128 .173 M 25 x 1 -6g 33.30 26.97 24.61 3.25 4.93 1.311 1.062 .969 .128 .194 M 28 x 1-6g 36.50 29.36 26.97 3.25 4.93 1.437 1.156 1.062 .128 .194 M 31 x 1-6g 39.70 31.75 29.36 3.25 4.93 1.563 1.250 1.156 .128 .194 M 34x 1-6g 42.90 34.93 31.75 3.91 6.15 1.689 1.375 1.250 .154 .242 M 37x 1-6g 46.00 38.10 34.93 3.91 6.15 1.811 1.500 1.375 .154 .242 Receptacle type 7 .890 shell size MS shell size 9 A 11 13 15 17 19 21 23 25 110 B C D E F G H J A B Max C Max D Max E Max F 16.53 9.90 3.20 30.50 24.00 .651 .390 .126 .126 .945 1.063 19.07 9.90 3.20 35.20 27.00 31.80 27.00 .751 .390 .126 .126 1.063 1.252 23.82 9.90 3.20 38.40 32.00 34.90 .938 .390 .126 .126 1.260 1.374 26.97 9.90 3.20 41.60 36.00 38.10 1.062 .390 .126 .126 1.417 1.500 30.15 9.90 3.20 44.80 37.00 41.30 1.187 .390 .126 .126 1.457 1.626 33.32 9.90 3.20 49.50 41.00 46.00 1.312 .390 .126 .126 1.614 1.811 36.50 9.90 3.20 52.70 46.00 49.20 1.437 .390 .126 .126 1.811 1.937 39.67 9.90 3.20 55.90 50.00 52.40 1.562 .390 .126 .126 1.969 2.063 42.85 9.90 3.20 59.00 51.23 55.60 1.687 .390 .126 .126 2.017 2.189 G Thread M 12x1-6g M 15x 1-6g M 18x1-6g M 22x1-6g M 25x1-6g M 28x1-6g M 31x1-6g M 34x1-6g M 37x1-6g