b'TUBE TO TUBE UNIONB U L K H E A D U N I O NDIMENSIONSTubePanel Max. Panel D F D O.D.A D E F Hole DrillThicknessSizeInches1/8 2.02 0.50 0.09 1/2 21/64 0.501/4 2.27 0.60 0.19 5/8 29/64 0.40E 5/16 2.39 0.64 0.25 11/16 33/64 0.44A 3/8 2.45 0.66 0.28 3/4 37/64 0.441/2 2.80 0.90 0.41 15/16 49/64 0.505/8 2.86 0.96 0.50 1-1/16 57/64 0.503/4 3.11 0.96 0.62 1-3/16 11/64 0.661 3.77 1.23 0.88 1-5/8 1-21/64 0.75Millimetres6 57.70 15.30 4.80 16 11.50 10.208 61.00 16.20 6.40 18 13.10 11.2010 63.70 17.20 7.90 22 16.30 11.2012 71.00 22.80 9.50 24 19.50 12.7014 72.50 24.40 11.10 27 22.50 12.7015 72.50 24.40 11.90 27 22.80 12.7016 72.50 24.40 12.70 27 22.80 12.7018 78.90 24.40 15.10 30 26.00 16.8020 84.50 26.00 15.90 35 29.00 19.00U N I O N E L B O WDIMENSIONSTubeA D E FD E O.D. F Inches1/8 0.88 0.50 0.09 3/81/4 1.06 0.60 0.19 1/25/16 1.13 0.64 0.25 9/163/8 1.20 0.66 0.25 5/81/2 1.42 0.90 0.41 13/165/8 1.50 0.96 0.50 15/163/4 1.57 0.96 0.62 1-1/167/8 1.76 1.02 0.72 1-3/81 1.93 1.23 0.88 1-3/8A Millimetres Inches6 27.00 15.30 4.80 1/28 28.80 16.20 6.40 9/1610 31.50 17.20 7.90 11/1612 36.00 22.80 9.50 13/1615 38.00 24.40 11.90 15/1616 8.00 24.40 12.70 15/1618 39.80 24.40 15.10 1-1/1620 44.60 26.00 15.90 1-3/822 44.60 26.00 18.30 1-3/825 49.10 31.30 21.80 1-3/8Dimensionsforreferenceonly,subjecttochange.14 TWINLOK - Tube Compression Fittings'