| ATTACHMENT METHOD | MOUNTING HOLE | 
| BODY STYLE | PLAIN, SOLID | 
| BORE NOMINAL DIAMETER | 0.641 INCHES BOTH ENDS | 
| BORE STYLE | STRAIGHT SPLINE BOTH ENDS | 
| FACE NOMINAL WIDTH | 0.750 INCHES | 
| FIRST GROOVE NOMINAL DIAMETER | 1.1562 INCHES SECOND END | 
| FIRST GROOVE NOMINAL WIDTH | 0.3281 INCHES SECOND END | 
| HELIX ANGLE | 36.1999 DEGREES | 
| HUB NOMINAL DIAMETER | 1.438 INCHES SECOND END | 
| HUB STYLE DESIGNATOR | 1 GROOVE SECOND END | 
| HUB STYLE DESIGNATOR | PLAIN FIRST END | 
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-681,CLASS 80-50 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | 
| PITCH DIAMETER | 1.3630 INCHES NOMINAL | 
| MATERIAL | STEEL OVERALL | 
| MOUNTING HOLE NOMINAL DIAMETER | 0.156 INCHES TRANSVERSELY THROUGH HUB FIRST END | 
| MOUNTING HOLE TYPE AND QUANTITY | 1 PLAIN TRANSVERSELY THROUGH HUB FIRST END | 
| NOMINAL DISTANCE FROM END TO FIRST GROOVE | 0.1406 INCHES SECOND END | 
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.469 INCHES SECOND END | 
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.594 INCHES FIRST END | 
| NOMINAL OUTSIDE DIAMETER | 1.5625 INCHES | 
| PRESSURE ANGLE | 20.0000 DEGREES | 
| SPLINE QUANTITY | 4 BOTH ENDS | 
| STYLE DESIGNATOR | PROTRUDING HUBS | 
| TEETH QUANTITY | 11 | 
| TEETH TYPE | SINGLE HELIX | 
| TOOTH FORM | STANDARD | 
| TOOTH DIRECTION | LEFT |