PART NO. THREAD COPPERWASHER DIMENSIONS E F F A B L S1 S2 2TB-02-04G/SP R1/8"X28 G1/4"X19 DP-B04G 10 14.5 24.5 12 19 2TB-04G/SP R1/4"X19 G1/4"X19 DP-B04G 14.5 14.5 29 17 19 2TB-04-08G/SP R1/4"X19 G1/2"X14 DP-B08G 14.5 20 31.5 19 27 2TB-06-04G/SP R3/8"X19 G1/4"X19 DP-B04G 15 14.5 29.5 19 19 2TB-08-04G/SP R1/2"X14 G1/4"X19 DP-B04G 20 14.5 36.5 22 19 2TB-08G/SP R1/2"X14 G1/2"X14 DP-B08G 20 20 39 22 27