| APERTURE DIAMETER | 20.41 MILLIMETERS NOMINAL | 
| APERTURE SHAPE | ROUND | 
| FEATURES PROVIDED | APERTURE | 
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/9 FED SPEC SINGLE MATERIAL RESPONSE | 
| MATERIAL | ALUMINUM ALLOY 7075 | 
| PROPRIETARY CHARACTERISTICS | PACS | 
| MOUNTING CONFIGURATION | EQUALLY SPACED ON 32.0 MM. BOLT CIRCLE | 
| MOUNTING HOLE QUANTITY | 12 | 
| MOUNTING HOLE DIAMETER | 5.6 MILLIMETERS NOMINAL ALL HOLES | 
| NONDEFINITIVE SPEC/STD DATA | T651 TREATMENT | 
| OUTSIDE DIAMETER | 43.41 MILLIMETERS NOMINAL | 
| SHAPE | ROUND | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625, TY 3 MIL SPEC SINGLE TREATMENT RESPONSE | 
| SURFACE TREATMENT | ANODIZE | 
| THICKNESS | 5.00 MILLIMETERS NOMINAL |