| ATTACHMENT METHOD | MOUNTING HOLE |
| BODY STYLE | WEBBED, WITH LIGHTENING HOLES |
| BODY RECESS NOMINAL DEPTH | 7.125 INCHES FIRST END |
| BORE NOMINAL DIAMETER | 8.125 INCHES BOTH ENDS |
| BORE STYLE | PLAIN BOTH ENDS |
| FACE NOMINAL WIDTH | 3.000 INCHES |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 8640 OVERALL |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNF TRANSVERSELY THROUGH SIDE |
| MOUNTING HOLE TYPE AND QUANTITY | 8 THREADED TRANSVERSELY THROUGH SIDE |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.312 INCHES TRANSVERSELY THROUGH SIDE |
| NOMINAL OUTSIDE DIAMETER | 20.219 INCHES |
| NOMINAL OVERALL LENGTH | 7.625 INCHES |
| PITCH DIAMETER | 19.7500 INCHES NOMINAL |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | BELL SHAPE BODY, HUBLESS |
| TEETH QUANTITY | 79 |
| TOOTH FORM | STANDARD |