| ATTACHMENT METHOD | MOUNTING HOLE |
| BODY STYLE | WEBBED, WITH LIGHTENING HOLES |
| BORE STYLE | W/ KEYWAY BOTH ENDS |
| BORE NOMINAL DIAMETER | 2.874 INCHES BOTH ENDS |
| FACE NOMINAL WIDTH | 2.000 INCHES |
| HARDNESS RATING | 59.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| HUB NOMINAL DIAMETER | 3.875 INCHES SECOND END |
| KEYWAY NOMINAL WIDTH | 0.500 INCHES BOTH ENDS |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66,AISI/SAE 4615,E4340H FED STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4615 AND STEEL COMP E4340H OVERALL |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.500 INCHES TRANSVERSELY THROUGH HUB, FIRST END |
| MOUNTING HOLE THREAD QUANTITY PER INCH | 13 TRANSVERSELY THROUGH HUB, FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC TRANSVERSELY THROUGH HUB, FIRST END |
| MOUNTING HOLE TYPE AND QUANTITY | 2 THREADED TRANSVERSELY THROUGH HUB, FIRST END |
| NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 1.686 INCHES BOTH ENDS |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.500 INCHES BOTH ENDS |
| NOMINAL OUTSIDE DIAMETER | 8.666 INCHES |
| NOMINAL OVERALL LENGTH | 3.000 INCHES |
| PITCH DIAMETER | 8.3333 INCHES NOMINAL |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | PROTRUDING HUBS |
| TEETH QUANTITY | 50 |
| TOOTH FORM | STANDARD |