| BODY STYLE | WEBBED, OFFSET, WITH LIGHTENING HOLES |
| BORE NOMINAL DIAMETER | 2.250 INCHES BOTH ENDS |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| END NOMINAL DIAMETER | 2.500 INCHES FIRST END |
| END NOMINAL LENGTH | 0.812 INCHES FIRST END |
| FACE NOMINAL WIDTH | 1.843 INCHES |
| FIRST STEP NOMINAL DIAMETER | 2.875 INCHES FIRST END |
| FIRST STEP NOMINAL LENGTH | 0.969 INCHES FIRST END |
| HARDNESS RATING | 60.0 ROCKWELL C MINIMUM OVERALL |
| HUB STYLE DESIGNATOR | 1 STEP FIRST END |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PITCH DIAMETER | 11.6667 INCHES NOMINAL |
| MATERIAL | STEEL COMP 8620 OVERALL |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 1.781 INCHES FIRST END |
| NOMINAL OUTSIDE DIAMETER | 12.8750 INCHES |
| NOMINAL OVERALL LENGTH | 3.905 INCHES |
| PRESSURE ANGLE | 20.0000 DEGREES |
| SPLINE PITCH DIAMETER | 2.1875 INCHES NOMINAL BOTH ENDS |
| SPLINE QUANTITY | 35 BOTH ENDS |
| STYLE DESIGNATOR | SOLID BACK RING, PROTRUDING HUB, RECESSED HUB |
| TEETH QUANTITY | 70 |
| TEETH TYPE | SPUR |
| TOOTH FORM | STANDARD |