| CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH | 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 0.254 INCHES MINIMUM NUT |
| DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| HARDNESS RATING | 49.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL | STEEL OVERALL |
| MOUNTING HOLE DIAMETER | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM |
| MOUNTING HOLE ARRANGEMENT STYLE | 2 HOLES |
| MOUNTING HOLE COUNTERSINK ANGLE | 98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM |
| MOUNTING PROVISION LOCATION | OPPOSITE NUT PROJECTION SIDE |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT COUNTERBORE DEPTH | 0.062 INCHES MINIMUM NUT |
| NUT LENGTH | 1.260 INCHES MAXIMUM |
| NUT HEIGHT | 0.281 INCHES MAXIMUM |
| NUT MOUNTING PROVISION | COUNTERSUNK HOLES |
| NUT STYLE | PLATE |
| PLATE THICKNESS | 0.055 INCHES MAXIMUM |
| PLATE WIDTH | 0.375 INCHES MINIMUM AND 0.414 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNJF |
| THREAD QUANTITY PER INCH | 28 |