| MATERIAL | STEEL COMP 8617H OR |
| STEEL COMP 8620H OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-46172,GRADE D MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| SURFACE TREATMENT | CARBON OVERALL |
| HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND |
| 62.0 ROCKWELL C MAXIMUM TEETH |
| TEETH QUANTITY | 58 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| STYLE DESIGNATOR | HUBLESS |
| PITCH RADIUS | 12.0172 INCHES NOMINAL |
| FACE NOMINAL WIDTH | 1.000 INCHES |
| NOMINAL OUTSIDE RADIUS | 12.076 INCHES |
| ARC NOMINAL LENGTH | 18.224 INCHES |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MOUNTING HOLE TYPE AND QUANTITY | 6 PLAIN AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE NOMINAL DIAMETER | 0.420 INCHES AXIALLY THROUGH BODY, FIRST END |
| BOLT HOLE CIRCLE NOMINAL DIAMETER | 5.148 INCHES AXIALLY THROUGH BODY, FIRST END |