| END SIMILARITY | NOT IDENTICAL |
| OVERALL LENGTH | 17.594 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-13048, 8642, 4140 OR 8740 MIL SPEC ALL MATERIAL RESPONSES |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8642 OR STEEL COMP 8740 |
| SHAFT HARDNESS RATING | 17.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| SHAFT LOCATION | BOTH ENDS OF WORM |
| SPECIAL FEATURES | INTERNALLY THD ON 5TH PORTION 1ST END 0.875 IN. DEEP;0.500-20 THD;UNF,CLASS 2B |
| STRAIGHT UNTHREADED SECTION DIAMETER | 1.500 INCHES NOMINAL SECOND END FIFTH PORTION |
| STRAIGHT UNTHREADED SECTION DIAMETER | 1.767 INCHES NOMINAL SECOND END FOURTH PORTION |
| TEETH HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM |
| UNTHREADED SECTION KEYWAY DEPTH | 0.218 INCHES NOMINAL FIRST END FIFTH PORTION |
| UNTHREADED SECTION KEYWAY WIDTH | 0.3720 INCHES NOMINAL FIRST END FIFTH PORTION |
| WORM BODY TAPERED BEARING SURFACE END | NOT PROVIDED |
| WORM HELIX ANGLE | 4 DEG 57 MIN |
| WORM OUTSIDE DIAMETER | 3.774 INCHES MINIMUM AND 3.776 INCHES MAXIMUM |
| WORM PITCH DIAMETER | 3.216 INCHES NOMINAL |
| WORM THREAD DIRECTION | LEFT-HAND |
| WORM PRESSURE ANGLE IN DEG | 27.500 |
| WORM THREAD LEAD | 0.875 INCHES NOMINAL |
| WORM THREAD QUANTITY | 1 |
| WORM THREAD SECTION LENGTH | 3.750 INCHES NOMINAL |