| DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH | 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL | STEEL OVERALL |
| PLATE THICKNESS | 0.017 INCHES MINIMUM AND 0.047 INCHES MAXIMUM |
| PLATE WIDTH | 0.524 INCHES MINIMUM AND 0.554 INCHES MAXIMUM |
| PROPRIETARY CHARACTERISTICS | PACS |
| 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 | 0.283 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| NUT LENGTH | 1.277 INCHES MINIMUM AND 1.307 INCHES MAXIMUM |
| NUT MOUNTING PROVISION | STRAIGHT HOLES |
| NUT STYLE | PLATE |
| SPECIAL FEATURES | LUBRICANT ON NUT ONLY |
| SPECIAL TEST FEATURES | SALT SPRAY RESISTANT PER QQ-P-416 TY 2 |
| SUPPLEMENTARY FEATURES | ONE-WAY SUBSTITUTION FOR F9421-4 (ONE-WAY FORWARD) |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 11,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| TEMP RATING | 450.0 DEG FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNJF |