| ATTACHMENT METHOD | MOUNTING HOLE |
| BODY STYLE | PLAIN, SOLID |
| BOLT HOLE CIRCLE NOMINAL DIAMETER | 2.1875 INCHES AXIALLY THROUGH HUB FIRST END |
| BORE NOMINAL DIAMETER | 1.5945 INCHES BOTH ENDS |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| FACE NOMINAL WIDTH | 0.6410 INCHES |
| HARDNESS RATING | 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL |
| HUB NOMINAL DIAMETER | 2.8748 INCHES SECOND END |
| HUB STYLE DESIGNATOR | PLAIN SECOND END |
| MATERIAL | STEEL OVERALL |
| PITCH ANGLE | 65.4327 DEGREES |
| PITCH DIAMETER | 3.5000 INCHES NOMINAL |
| PRESSURE ANGLE | 20.0000 DEGREES |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.3750 INCHES AXIALLY THROUGH HUB FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH HUB FIRST END |
| MOUNTING HOLE TYPE AND QUANTITY | 4 THREADED AXIALLY THROUGH HUB FIRST END |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 1.375 INCHES SECOND END |
| NOMINAL OVERALL LENGTH | 1.750 INCHES |
| NOMINAL OUTSIDE DIAMETER | 3.5820 INCHES |
| SPECIAL FEATURES | COUNTERBORE ON SECOND END,1.626 IN. DIA,0.875 IN. DEEP; MOUNTING HOLES ARE COUNTERBORED TO THE THREADED PORTION |
| SPLINE PITCH DIAMETER | 1.4800 INCHES NOMINAL BOTH ENDS |
| SPLINE QUANTITY | 16 BOTH ENDS |
| STYLE DESIGNATOR | PERIPHERAL FACE, BACK HUB PROTRUDING |
| TEETH QUANTITY | 35 |
| TEETH TYPE | STRAIGHT |