| MATERIAL | STEEL OVERALL |
| HARDNESS RATING | 42.0 ROCKWELL C MINIMUM AND |
| 28.0 ROCKWELL C MAXIMUM TEETH |
| TEETH QUANTITY | 42 |
| TOOTH FORM | STANDARD |
| PRESSURE ANGLE | 25.0000 DEGREES |
| STYLE DESIGNATOR | ONE PROTRUDING HUB, ONE FLUSH HUB |
| PITCH DIAMETER | 8.4894 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 8.793 INCHES |
| FACE NOMINAL WIDTH | 1.130 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.370 INCHES FIRST END |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| BORE NOMINAL DIAMETER | 4.000 INCHES BOTH ENDS |
| SPLINE QUANTITY | 64 BOTH ENDS |
| SPLINE PITCH DIAMETER | 4.0000 INCHES NOMINAL BOTH ENDS |
| HUB STYLE DESIGNATOR | PLAIN FIRST END |
| HUB NOMINAL DIAMETER | 4.906 INCHES FIRST END |
| BODY STYLE | WEBBED, SOLID |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MOUNTING HOLE TYPE AND QUANTITY | 6 THREADED AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNF AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.312 INCHES AXIALLY THROUGH BODY, FIRST END |
| BOLT HOLE CIRCLE NOMINAL DIAMETER | 4.875 INCHES AXIALLY THROUGH BODY, FIRST END |