| EXTERNAL PREBENT KEY ANGLE | 16.0 DEGREES MINIMUM AND 18.0 DEGREES MAXIMUM |
| EXTERNAL PREBENT KEY LENGTH | 1.750 INCHES NOMINAL |
| EXTERNAL PREBENT KEY WIDTH | 0.605 INCHES MINIMUM AND 0.615 INCHES MAXIMUM |
| EXTERNAL KEY QUANTITY | 2 |
| HOLE DIAMETER | 2.263 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/11,T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL THICKNESS | 0.187 INCHES NOMINAL |
| MATERIAL | ALUMINUM ALLOY 6061 OVERALL |
| OUTSIDE DIAMETER | 4.500 INCHES NOMINAL |
| STYLE DESIGNATOR | KEY |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541,CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CHROMATE OVERALL |