P-NPT Size (in.) | Px-RS Size (in.) | Basic Ordering Number | L | F | B | Bx | E Minimum Opening | D | | 1/8 | 1/8 | A-NS2-RS2 | 25.1 | 14.3 | 9.9 | 7.1 | 4.1 | 13.7 | | 1/4 | 1/4 | A-NS4-RS4 | 33.5 | 19.1 | 10.4 | 11.2 | 5.8 | 18.0 | | 3/8 | 3/8 | A-NS6-RS6 | 35.8 | 22.2 | 15.0 | 11.2 | 7.9 | 21.6 | | 1/2 | 1/2 | A-NS8-RS8 | 44.2 | 27.0 | 15.0 | 14.2 | 11.9 | 25.9 | | 3/4 | 3/4 | A-NS12-RS12 | 48.0 | 33.3 | 20.6 | 15.7 | 15.7 | 32.0 | | 1 | 1 | A-NS16-RS16 | 53.3 | 41.3 | 25.4 | 18.3 | 19.8 | 38.9 | |  |