| BODY STYLE | PLAIN, SOLID |
| BORE NOMINAL DIAMETER | 0.6640 INCHES BOTH ENDS |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| END NOMINAL DIAMETER | 0.9846 INCHES FIRST END |
| END NOMINAL DIAMETER | 0.9846 INCHES SECOND END |
| END NOMINAL LENGTH | 0.5620 INCHES SECOND END |
| END NOMINAL LENGTH | 0.6880 INCHES FIRST END |
| FACE NOMINAL WIDTH | 0.750 INCHES |
| FIRST STEP NOMINAL DIAMETER | 1.2600 INCHES SECOND END |
| FIRST STEP NOMINAL DIAMETER | 1.3100 INCHES FIRST END |
| FIRST STEP NOMINAL LENGTH | 0.0600 INCHES FIRST END |
| FIRST STEP NOMINAL LENGTH | 0.0600 INCHES SECOND END |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| HUB STYLE DESIGNATOR | 1 STEP FIRST END |
| HUB STYLE DESIGNATOR | 1 STEP SECOND END |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.6220 INCHES SECOND END |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.7480 INCHES FIRST END |
| NOMINAL OUTSIDE DIAMETER | 4.3125 INCHES |
| PITCH DIAMETER | 4.1875 INCHES NOMINAL |
| PRECISION CLASSIFICATION | QUALITY NUMBER 9 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| SPLINE PITCH DIAMETER | 0.6000 INCHES NOMINAL BOTH ENDS |
| SPLINE QUANTITY | 12 BOTH ENDS |
| STYLE DESIGNATOR | PROTRUDING HUBS |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| TEETH QUANTITY | 67 |
| TOOTH FORM | STANDARD |