WN SO SW LJ THD WN SO SW THD LJ 1/2" 3 1/2 0.62 0.88 0.9 0.93 7/16 1 7/8 5/8 5/8 0.84 1 3/16 3/4" 3 7/8 0.82 1.09 1.11 1.14 1/2 2 1/16 5/8 5/8 1.05 1 1/2 1" 4 1/4 1.05 1.36 1.38 1.41 9/16 2 3/16 11/16 11/16 1.32 1 15/16 1-1/4" 4 5/8 1.38 1.7 1.72 1.75 5/8 2 1/4 13/16 13/16 1.66 2 5/16 1-1/2" 5 1.61 1.95 1.97 1.99 11/16 2 7/16 7/8 7/8 1.9 2 9/16 2" 6 2.07 2.44 2.46 2.5 3/4 2 1/2 1 1 2.38 3 1/16 2-1