| DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER | 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 0.492 INCHES NOMINAL NUT |
| COUNTERSINK ANGLE | 81.5 DEGREES MINIMUM AND 82.5 DEGREES MAXIMUM NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/5 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/4 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM ALLOY 2017 OR ALUMINUM ALLOY 2024 OVERALL |
| MOUNTING HOLE DIAMETER | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM |
| MOUNTING HOLE ARRANGEMENT STYLE | 2 HOLES |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT HEIGHT | 0.453 INCHES MAXIMUM |
| NUT LENGTH | 1.265 INCHES MINIMUM AND 1.297 INCHES MAXIMUM |
| NUT MOUNTING PROVISION | STRAIGHT HOLES |
| NUT STYLE | PLATE |
| PLATE THICKNESS | 0.031 INCHES MINIMUM AND 0.063 INCHES MAXIMUM |
| PLATE WIDTH | 0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM |
| SURFACE TREATMENT | ANODIZE OVERALL |
| TEMP RATING | 250.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNF |
| THREAD QUANTITY PER INCH | 28 |