PART NO. THREAD STECKO SIZE DIMENSIONS E A B M N S1 2TY4-06 R3/8"X19 3/8" 25 35.3 20.17 14.02 22 2TY4-08 R1/2"X14 1/2" 30 37 24.16 18.03 27 2TY4-12 R3/4"X14 3/4" 33.5 40 29.16 24.03 36 2TY4-16 R1"X11 1" 44.5 49.5 39.12 31.01 48