PART NO. THREAD DIMENSIONS E,F,G,H A,B,C,D S1 ZT-02 Rc1/8"X28 20 16 ZT-04 Rc1/4"X19 22.5 19 ZT-06 Rc3/8"X19 26 24 ZT-08 Rc1/2"X14 31 27 ZT-12 Rc3/4"X14 34 33 ZT-16 Rc1"X11 42 41 ZT-20 Rc1.1/4"X11 48 50 ZT-24 Rc1.1/2"X11 53 60 ZT-32 Rc2"X11 62 70