管螺纹规格尺寸对照表

管螺纹外螺纹大径内螺纹小径R1/8"-28 9.728 8.566

R1/4"-19 13.157 11.445

R3/8"-19 16.663 14.951

R1/2"-14 20.956 18.632 (R5/8"-14) 22.912 20.588

R3/4"-14 26.442 24.119

R1"-11 33.250 30.292

R1.1/4"-11 41.912 38.954

R1.1/2"-11 47.805 44.847

R1.3/4"-11 53.748 50.791

R2"-11 59.616 56.659

管螺纹外螺纹大径内螺纹小径G1/8"-28 9.728 8.386

G1/4"-19 13.157 11.445

G3/8"-19 15.862 14.95

G1/2"-14 20.955 18.531 (G5/8"-14) 22.911 20.587

G3/4"-14 26.441 24.117

G1"-11 33.249 30.291

G1.1/4"-11 41.91 36.962

G1.1/2"-11 47.803 44.845

G1.3/4"-11 53.746 50.788

G2"-11 59.614 56.556

管螺纹外径内径

Z1/8"-27 10.272 8.766

Z1/4"-18 13.572 11.314

Z3/8"-18 17.055 14.797

Z1/2"-14 21.223 18.321

Z3/4"-14 26.568 23.666

Z1"-11.1/2 33.228 29.694

Z1.1/4"-11.1/2 41.985 38.451

Z1.1/2"-11.1/2 48.054 44.520

Z2"-11.1/2 60.092 56.558 UNF

管螺纹外径内径

7/16"-20 11.113 9.9

1/2"-20 12.700 11.5

9/16"-18 14.288 12.9

3/4"-16 19.050 17.5

7/8"-14 22.225 20.5

1.1/16"-12 26.988 24.9

1.5/16"-12 33.338 31.3

1.5/8"-12 41.275 39.2

SAE 45°

管螺纹外径内径

3/8"-24 9.525 8.6

7/16"-20 11.113 9.9

1/2"-20 12.700 11.5

5/8"-18 15.875 14.2

3/4"-16 18.900 17.5