PART NO. THREAD DIMENSIONS E F A B L S1 1SB-04 G1/4"X19 G1/4"X19 14 12 32 19 1SB-06 G3/8"X19 G3/8"X19 16 13.5 37.5 22 1SB-08 G1/2"X14 G1/2"X14 19 16 45 27 1SB-12 G3/4"X14 G3/4"X14 21 18.5 50.5 32 1SB-16 G1"X11 G1"X11 23 20.5 56.5 41