SAE螺纹标准

SAE STRAIGHT THREAD PORT DIMENSIONS® ®SAE information is provided as an aid to designers. For c

®® SAEinformationisprovidedasanaidtodesigners.For SAESTRAIGHT com-pletespecificationsrefertoSAEStandardsJ1926for straightthreadportsandJ518JUN93for4-Boltflangeports. THREADPORT DIMENSIONS FORBESTRESULTSUSEAFORMTOOLTOMACHINECAVITY NOMINAL C F B * H SIZE T U B E THREAD A +.015 D E +.005 G ±1° CODE SIZE SIZE MIN MIN – . 0 0 0 MIN MAX – . 0 0 0 MIN 12 –2 1/8 5/16-24 .062 .390 .074 .468 . 0 6 2 .358 .672 12 –3 3 / 1 6 3/8-24 .125 .390 .074 .468 . 0 6 2 .421 .750 12 –4 1/4 7/16-20 .172 .454 .093 .547 . 0 6 2 .487 .828 12 –5 5 / 1 6 1/2-20 .234 .454 .093 .547 . 0 6 2 .550 .906 12 –6 3/8 9/16-18 .297 .500 .097 .609 . 0 6 2 .616 .969 15 –8 1/2 3/4-16 .391 .562 .100 .688 . 0 9 4 .811 1.188 15 –10 5/8 7/8-14 .484 .656 .100 .781 . 0 9 4 .942 1.344 15 –12 3/4 11/16-12 .609 .750 .130 .906 . 0 9 4 1.148 1.625 15 –14 7/8 13/16-12 .719 .750 .130 .906 . 0 9 4 1.273 1.765 15 –16 1 15/16-12 .844 .750 .130 .906 . 1 2 5 1.398 1.910 15 –20 11/4 15/8-12 1.078 .750 .132 .906 . 1 2 5 1.713 2.270 15 –24 11/2 17/8-12 1.312 .750 .132 .906 . 1 2 5 1.962 2.560 15 –32 2 21/2-12 1.781 .750 .132 .906 . 1 2 5 2.587 3.480 15 –40** 21/2 3-12 2.344 .750 .132 1.250 . 0 9 4 3.088 3.875 15 –48** 3 31/2-12 2.844 .750 .132 1.250 . 0 9 4 3.588 4.438