| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| BORE NOMINAL DIAMETER | 1.188 INCHES BOTH ENDS |
| FACE NOMINAL WIDTH | 3.000 INCHES |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-16974 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OVERALL |
| NOMINAL OUTSIDE DIAMETER | 2.927 INCHES |
| PITCH DIAMETER | 2.6410 INCHES NOMINAL |
| PRESSURE ANGLE | 20.0000 DEGREES |
| SPLINE PITCH DIAMETER | 1.1250 INCHES NOMINAL BOTH ENDS |
| SPLINE QUANTITY | 19 BOTH ENDS |
| STYLE DESIGNATOR | HUBLESS |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232,TYPE M,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| THREAD FORM DIRECTION | RIGHT-HAND |
| THREAD FORM QUANTITY | 1 |