| BASE INSIDE DIAMETER | 0.500 INCHES NOMINAL |
| CENTER HOLE LENGTH | 0.250 INCHES MINIMUM AND 0.254 INCHES MAXIMUM |
| CENTER HOLE WIDTH | 0.250 INCHES MINIMUM AND 0.254 INCHES MAXIMUM |
| CHAMFER ANGLE IN DEG | 23.0 |
| FIRST COUNTERBORE DEPTH | 0.032 INCHES NOMINAL |
| FIRST COUNTERBORE DIAMETER | 0.380 INCHES MINIMUM AND 0.384 INCHES MAXIMUM |
| HEIGHT ABOVE MOUNTING SURFACE | 0.312 INCHES NOMINAL |
| OUTSIDE DIAMETER | 0.688 INCHES MINIMUM AND 0.692 INCHES MAXIMUM |
| MOUNTING FACILITY TYPE AND QUANTITY | 1 UNTHREADED HOLE(S) |
| SHOULDER DEPTH | 0.045 INCHES MINIMUM AND 0.049 INCHES MAXIMUM |
| SHOULDER FLAT ANGLE IN DEG | 86.0 |
| SHOULDER NOTCH WIDTH | 0.100 INCHES NOMINAL |
| SHOULDER OUTSIDE DIAMETER | 0.618 INCHES MINIMUM AND 0.622 INCHES MAXIMUM |
| STYLE DESIGNATOR | TAPERED, COUNTERSINK |