| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-A322 ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTM-A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND |
| 38.0 ROCKWELL C MAXIMUM OVERALL |
| TEETH QUANTITY | 28 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | PROTRUDING HUBS |
| PITCH DIAMETER | 2.3333 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 2.560 INCHES |
| FACE NOMINAL WIDTH | 0.250 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.550 INCHES FIRST END |
| 0.200 INCHES SECOND END |
| BORE STYLE | STRAIGHT SPLINE BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.563 INCHES BOTH ENDS |
| SPLINE QUANTITY | 19 BOTH ENDS |
| HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| HUB NOMINAL DIAMETER | 0.900 INCHES BOTH ENDS |
| BODY STYLE | PLAIN, WITH LIGHTENING HOLES |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MOUNTING HOLE TYPE AND QUANTITY | 6 COUNTERBORED AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE NOMINAL DIAMETER | 0.500 INCHES AXIALLY THROUGH BODY, FIRST END |
| BOLT HOLE CIRCLE NOMINAL DIAMETER | 1.500 INCHES AXIALLY THROUGH BODY, FIRST END |