| CASEHARDENING INDICATOR | NOT CASEHARDENED |
| CHAMFER LENGTH | 0.031 INCHES NOMINAL |
| DISTANCE BETWEEN FIRST AND SECOND RIDGE CENTERS | 0.061 INCHES MINIMUM AND 0.063 INCHES MAXIMUM |
| DISTANCE FROM BOTTOM TO FIRST RIDGE CENTER | 0.052 INCHES MINIMUM AND 0.062 INCHES MAXIMUM |
| DISTANCE BETWEEN SECOND AND THIRD RIDGE CENTERS | 0.061 INCHES MINIMUM AND 0.063 INCHES MAXIMUM |
| FIRST GROOVE WIDTH | 0.062 INCHES NOMINAL |
| FSC APPLICATION DATA | ENGINE,AIRCRAFT,RECIPROCATING |
| LARGEST INSIDE DIAMETER | 0.510 INCHES MINIMUM AND 0.516 INCHES MAXIMUM |
| LARGEST OUTSIDE DIAMETER CHAMFER ANGLE IN DEG | 90.0 |
| LARGEST OUTSIDE DIAMETER | 0.8089 INCHES NOMINAL |
| LARGEST TOP COUNTERSINK DIAMETER | 0.556 INCHES MINIMUM AND 0.559 INCHES MAXIMUM |
| OUTSIDE INCLUDED ANGLE IN DEG | 20.0 |
| OVERALL HEIGHT | 0.356 INCHES MINIMUM AND 0.362 INCHES MAXIMUM |
| MATERIAL | COPPER ALLOY |
| SECOND GROOVE WIDTH | 0.062 INCHES NOMINAL |
| STYLE DESIGNATOR | STRAIGHT BORE |
| THREAD PROVISION | UNTHREADED |