Tube Bulkhead Union Fittings

Item # Dimension A Dimension B Tube Outer Diameter Dimension C Panel Hole (Drill Size)
BU-F-2-XX 1.55 in 0.88 in 0.125 in 0.44 in 21/64
BU-F-3-XX 1.51 in 0.88 in 3/16 in 0.44 in 25/64
BU-F-4-XX 1.81 in 0.94 in 1/4 in 0.56 in 29/64
BU-F-5-XX 1.81 in 0.94 in 5/16 in 0.75 in 37/64
BU-F-6-XX 1.81 in 0.94 in 3/8 in 0.75 in 45/64
BU-F-8-XX 2.25 in 1.19 in 1/2 in 0.94 in 57/64
BU-F-10-XX 2.33 in 1.23 in 5/8 in 1.13 in 1-1/64
BU-F-12-XX 2.33 in 1.25 in 3/4 in 1.13 in 1-9/64
BU-F-16-XX 2.53 in 1.33 in 1 in 1.5 in 1-25/64
BU-F-11-XX 2.62 in 1.44 in 1.1 in 1.59 in 1-1/2
BU-M-4-XX 1.81 in 0.88 in 4 mm 0.44 in 25/64
BU-M-6-XX 1.81 in 0.94 in 6 mm 0.56 in 29/64
BU-M-8-XX 1.81 in 0.94 in 8 mm 0.75 in 37/64
BU-M-10-XX 1.81 in 0.94 in 10 mm 0.75 in 45/64
BU-M-12-XX 2.25 in 1.19 in 12 mm 0.94 in 57/64