PART NO. THREAD DIMENSIONS E F G A B C S1 ABTB-04 G1/4"X19 R1/4"X19 G1/4"X19 24.5 25.5 24.5 14 ABTB-06 G3/8"X19 R3/8"X19 G3/8"X19 27.5 28.5 27.5 16 ABTB-08 G1/2"X14 R1/2"X14 G1/2"X14 34.5 36 34.5 22 ABTB-12 G3/4"X14 R3/4"X14 G3/4"X14 40 43.5 40 27 ABTB-16 G1"X11 R1"X11 G1"X11 46 50 46 33