| APERTURE DIAMETER | 2.890 INCHES MINIMUM AND 2.915 INCHES MAXIMUM |
| BOLT CIRCLE HOLE QUANTITY | 6 |
| CROSS-SECTIONAL SHAPE STYLE | RAISED SURFACE W/ APERTURE |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-M-40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | MAGNESIUM ALLOY AZ80A OVERALL |
| MOUNTING BOLT CIRCLE DIAMETER | 4.250 INCHES NOMINAL |
| MOUNTING HOLE ARRANGEMENT STYLE | SINGLE BOLT HOLE CIRCLE |
| MOUNTING HOLE DIAMETER | 0.281 INCHES MINIMUM AND 0.288 INCHES MAXIMUM |
| MOUNTING HOLE TYPE | ROUND, UNTHREADED |
| OUTSIDE DIAMETER | 4.830 INCHES MINIMUM AND 4.870 INCHES MAXIMUM |
| OUTSIDE RAISED SURFACE DIAMETER | 3.666 INCHES MINIMUM AND 3.668 INCHES MAXIMUM |
| OVERALL THICKNESS | 0.181 INCHES MINIMUM AND 0.185 INCHES MAXIMUM |
| RAISED SURFACE HEIGHT | 0.175 INCHES MINIMUM AND 0.179 INCHES MAXIMUM |
| STYLE DESIGNATOR | ROUND |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-M-3171 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | DICHROMATE OVERALL |