| APERTURE DIAMETER | 0.447 INCHES MINIMUM AND 0.477 INCHES MAXIMUM |
| APERTURE SHAPE | ROUND |
| APERTURE TYPE | COUNTERBORED |
| COUNTERBORE DEPTH | 0.242 INCHES MINIMUM AND 0.252 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 0.6249 INCHES MINIMUM AND 0.6253 INCHES MAXIMUM |
| MATERIAL | ALUMINUM |
| MOUNTING HOLE DIAMETER | |
| MOUNTING HOLE QUANTITY | 2 |
| MOUNTING HOLE TYPE | UNTHREADED |
| OUTSIDE DIAMETER | 1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM |
| RAISED SURFACE DIAMETER | 1.0570 INCHES MINIMUM AND 1.0585 INCHES MAXIMUM |
| RAISED SURFACE HEIGHT | 0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM |
| SHAPE | ROUND |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625, TY 2, CL 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| SURFACE TREATMENT | ANODIZE |
| THICKNESS | 0.615 INCHES MINIMUM AND 0.622 INCHES MAXIMUM |