| END SIMILARITY | NOT IDENTICAL |
| FIRST END EXTERNAL THREAD LENGTH | 0.455 INCHES NOMINAL |
| FIRST END GROOVE DIAMETER | 2.623 INCHES MINIMUM AND 2.625 INCHES MAXIMUM |
| FIRST END GROOVE WIDTH | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| FIRST END DIAMETER | 3.080 INCHES MINIMUM AND 3.100 INCHES MAXIMUM |
| FIRST END STYLE | CIRCULAR GROOVED AND EXTERNALLY THREADED |
| LARGEST STEP DIAMETER | 5.880 INCHES MINIMUM AND 5.900 INCHES MAXIMUM |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SHAFT-AIR DUCT, SPLINE SUPPORTED |
| OVERALL LENGTH | 7.444 INCHES MINIMUM AND 7.464 INCHES MAXIMUM |
| SECOND END DIAMETER | 3.770 INCHES MINIMUM AND 4.100 INCHES MAXIMUM |
| SECOND END DISTANCE FROM HOLE CENTER TO END | 2.820 INCHES MINIMUM AND 2.880 INCHES MAXIMUM |
| SECOND END STYLE | UNTHREADED CROSS DRILLED |
| STEP QUANTITY | 5 |
| SPECIAL FEATURES | THREAD SIZE IS 2.7510-18UNS-2A |