| BODY STYLE | WEBBED, WITH LIGHTENING HOLES |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.538 INCHES BOTH ENDS |
| END NOMINAL DIAMETER | 0.669 INCHES FIRST END |
| END NOMINAL DIAMETER | 0.669 INCHES SECOND END |
| END NOMINAL LENGTH | 0.400 INCHES SECOND END |
| END NOMINAL LENGTH | 0.550 INCHES FIRST END |
| FACE NOMINAL WIDTH | 0.253 INCHES |
| FIRST STEP NOMINAL DIAMETER | 0.780 INCHES FIRST END |
| FIRST STEP NOMINAL DIAMETER | 0.780 INCHES SECOND END |
| FIRST STEP NOMINAL LENGTH | 0.194 INCHES FIRST END |
| FIRST STEP NOMINAL LENGTH | 0.303 INCHES SECOND END |
| HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM TEETH |
| HUB STYLE DESIGNATOR | 1 STEP BOTH ENDS |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OR AISI/SAE 4340 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4340 OVERALL |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.703 INCHES SECOND END |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.744 INCHES FIRST END |
| NOMINAL OUTSIDE DIAMETER | 4.948 INCHES |
| PITCH DIAMETER | 4.8500 INCHES NOMINAL |
| PRECISION CLASSIFICATION | QUALITY NUMBER 11 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| SPECIAL FEATURES | COUNTEBORE ON 2ND END W/ 0.550 IN. DIA; 1.050 IN. DEPTH |
| SPLINE PITCH DIAMETER | 0.4803 INCHES NOMINAL BOTH ENDS |
| SPLINE QUANTITY | 11 BOTH ENDS |
| STYLE DESIGNATOR | PROTRUDING HUBS |
| TEETH QUANTITY | 97 |
| TOOTH FORM | STANDARD |