| MATERIAL | STEEL COMP 8620 AND |
| STEEL COMP 8720 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 25.0 ROCKWELL C MINIMUM AND |
| 40.0 ROCKWELL C MAXIMUM OVERALL |
| 58.0 ROCKWELL C MINIMUM AND |
| 62.0 ROCKWELL C MAXIMUM TEETH |
| TEETH QUANTITY | 31 |
| TEETH TYPE | SINGLE HELIX |
| TOOTH FORM | STANDARD |
| TOOTH DIRECTION | RIGHT |
| PRESSURE ANGLE | 14.5000 DEGREES |
| HELIX ANGLE | 37.3333 DEGREES |
| BACKLASH DESIGNATION | GRADE E |
| STYLE DESIGNATOR | PROTRUDING HUBS |
| PITCH DIAMETER | 3.8988 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 4.097 INCHES |
| FACE NOMINAL WIDTH | 0.620 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.220 INCHES BOTH ENDS |
| BORE STYLE | W/COUNTERBORE COUNTER BORE, SECOND END |
| BORE NOMINAL DIAMETER | 1.620 INCHES COUNTER BORE, SECOND END |
| COUNTERBORE NOMINAL DEPTH | 0.980 INCHES COUNTER BORE, SECOND END |
| COUNTERBORE NOMINAL DIAMETER | 1.850 INCHES COUNTER BORE, SECOND END |
| HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| HUB NOMINAL DIAMETER | 2.120 INCHES BOTH ENDS |
| BODY STYLE | PLAIN, SOLID |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 19207 |
| DESIGN CONTROL REFERENCE | 10935193 |