| MATERIAL | STEEL COMP 4140 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66,AISI/SAE FED STD SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND |
| 38.0 ROCKWELL C MAXIMUM OVERALL |
| TEETH QUANTITY | 28 |
| TOOTH FORM | STANDARD |
| PRESSURE ANGLE | 20.0000 DEGREES |
| BACKLASH DESIGNATION | GRADE A |
| STYLE DESIGNATOR | HUBLESS |
| PITCH DIAMETER | 2.8000 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 2.998 INCHES |
| FACE NOMINAL WIDTH | 0.688 INCHES |
| BORE STYLE | W/COUNTERBORE BOTH ENDS |
| BORE NOMINAL DIAMETER | 1.370 INCHES BOTH ENDS |
| COUNTERBORE NOMINAL DEPTH | 0.481 INCHES FIRST END |
| COUNTERBORE NOMINAL DIAMETER | 1.575 INCHES FIRST END |
| BODY STYLE | PLAIN, SOLID |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MOUNTING HOLE TYPE AND QUANTITY | 4 THREADED AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.250 INCHES AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE THREAD QUANTITY PER INCH | 28 AXIALLY THROUGH BODY, FIRST END |
| BOLT HOLE CIRCLE NOMINAL DIAMETER | 2.000 INCHES AXIALLY THROUGH BODY, FIRST END |
| SPECIAL FEATURES | BORE GROOVED 1.580 IN. DIA,0.090 IN.WIDE AT BOTTOM OF COUNTERBORE,125 MICROINCH FINISH BOTH ENDS,63 MICROINCH FINISH ON TOOTH FACES,MOUNTING HOLES COUNTER SUNK 90 DEGREESPORM 10 DEGREES TO 0.260 IN.MIN,0.280 IN.MAX BOTH ENDS |