PART NO. THREAD COPPER WASHER DIMENSIONS E F F A L S1 5NB-04G Z1/4"X18 G1/4"X19 DP-B04G 15 33 19 5NB-06-04G Z3/8"X18 G1/4"X19 DP-B04G 16 34 19 5NB-06-08G Z3/8"X18 G1/2"X14 DP-B08G 16 43 27 5NB-08G Z1/2"X14 G1/2"X14 DP-B08G 19.5 46.5 27