| MATERIAL | STEEL COMP 4620 OR |
| STEEL COMP 8617H OR |
| STEEL COMP 8620H OR |
| STEEL COMP 8622H OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND |
| 40.0 ROCKWELL C MAXIMUM HUB |
| 58.0 ROCKWELL C MINIMUM AND |
| 62.0 ROCKWELL C MAXIMUM TEETH |
| TEETH QUANTITY | 71 |
| TOOTH FORM | STANDARD |
| PRESSURE ANGLE | 25.0000 DEGREES |
| STYLE DESIGNATOR | FLUSH HUB |
| PITCH DIAMETER | 14.2000 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 14.5025 INCHES |
| FACE NOMINAL WIDTH | 2.620 INCHES |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| BORE NOMINAL DIAMETER | 4.117 INCHES BOTH ENDS |
| SPLINE QUANTITY | 64 BOTH ENDS |
| SPLINE PITCH DIAMETER | 4.0000 INCHES NOMINAL BOTH ENDS |
| HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| HUB NOMINAL DIAMETER | 5.530 INCHES FIRST END |
| 5.094 INCHES SECOND END |
| BODY STYLE | WEBBED, WITH LIGHTENING HOLES |
| 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 | 4.874 INCHES AXIALLY THROUGH BODY, FIRST END |