b'CONVERSION CHARTSACTUAL OUTSIDE DIAMETERS OF PIPE THREADS ACTUAL OUTSIDE DIAMETERS OF TUBE1 IN.M 2 NPT 3/4 IN.11-1/2 T.P.I. 1/2 IN.K 1-1/2 NPT 1/4 IN.J 1-1/4 NPT 11-1/2 T.P.I.11-1/2 T.P.I.H 1 NPTE 3/4 NPT 11-1/2 T.P.I.14 T.P.I. 7/8 IN.5/8 IN.D 1/2 NPT 1/8 IN. 3/8 IN.C 3/8 NPT 14 T.P.I.18 T.P.I. 3/16 IN.B 1/4 NPTA 1/8 NPT 18 T.P.I.27 T.P.I. METRIC THREAD STANDARDSTube Size DIN Metric DIN MetricMM (Light) (Heavy)6 M12x1.5 M14x1.5FRACTIONAL SIZE CODES 8 M14x1.5 M16x1.5Used with all Part Numbers to designate Tube and Pipe Fractional Sizes. 10 M16x1.5 M18x1.512 M18x1.5 M20x1.5Tube Size Code 1/16ths 14 M22x1.515 M22x1.5 1/8 3/16 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 2 2-1/2 3 4 16 M24x1.52 3 4 5 6 7 8 10 12 14 16 20 24 32 40 48 64 18 M26x1.5 Pipe Size Code 20 M30x2.022 M30x2.0 1/16 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2-1/2 3 4 25 M36x2.01 A B C D E H J K M N P S 28 M36x2.0 30 M42x2.035 M45x2.0 38 M52x2.042 M52x2.0 TUBE FITTING SIZE AND THREAD STANDARDS DASH O.D. 45 S.A.E. FLARE 37 J.I.C. FLARE COMPRESSION 45 INVERTED FLARE THREADED SLEEVE SIZE TUBE SIZE O.D. THREAD O.D. THREAD O.D. THREAD O.D. THREAD O.D. THREAD-2 1/8 5/16 24 5/16 24 5/16 24 5/16 28 5/16 24-3 3/16 3/8 24 3/8 24 3/8 24 3/8 24 3/8 24-4 1/4 7/16 20 7/16 20 7/16 24 7/16 24 7/16 24-5 5/16 1/2 20 1/2 20 1/2 24 1/2 20 1/2 20-6 3/8 5/8 18 9/16 18 9/16 24 5/8 18 9/16 20-8 1/2 3/4 16 3/4 16 5/8 24 11/16 18 5/8 18-10 5/8 7/8 14 7/8 14 11/16 20 3/4 18 11/16 16-12 3/4 1-1/16 14 1-1/16 12 13/16 18 7/8 18 -14 7/8 1-1/4 12 1-3/16 12 1 18 1-1/16 16 -16 1 1-3/8 12 1-5/16 12 1-1/8 18 1-3/16 16 -20 1-1/4 1-5/8 12 1-1/4 16 -24 1-1/2 1-7/8 12 -32 2 2-1/2 12 TUBE FITTING SIZE AND THREAD STANDARDS DASH O.D. O-RING BOSS FLARELESS O-RING FACE SEAL BRITISH PIPE TAPER BRITISH PIPE PARALLEL SIZE TUBE SIZE O.D. THREAD O.D. THREAD O.D. THREAD O.D. THREAD O.D. THREAD-2 1/8 5/16 24 5/16 24 -3 3/16 3/8 24 3/8 24 -4 1/4 7/16 20 7/16 20 9/16 18 1/4 19 1/4 19-5 5/16 1/2 20 1/2 20 -6 3/8 9/16 18 9/16 1811/16 16 3/8 19 3/8 19-8 1/2 3/4 16 3/4 16 13/16 16 1/2 14 1/2 14-10 5/8 7/8 14 7/8 14 1 145/8 14 5/8 14-12 3/4 1-1/16 12 1-1/16 12 1-3/16 12 3/4 14 3/4 14-14 7/8 1-3/16 12 1-3/16 12 -16 1 1-5/16 12 1-5/16 12 1-7/16 12 1 11 1 11-20 1-1/4 1-5/8 12 1-5/8 12 1-11/16 12 -24 1-1/2 1-7/8 12 1-7/8 12 2 12 -32 2 2-1/2 12 2-1/2 12 266'