| COUNTERBORE DIAMETER | 0.505 INCHES MINIMUM AND 0.508 INCHES MAXIMUM NUT |
| HEAD HEIGHT | 0.058 INCHES NOMINAL |
| HEAD MAJOR COUNTERSINK ANGLE | 75.0 DEGREES MINIMUM AND 77.0 DEGREES MAXIMUM |
| HEAD MINOR COUNTERSINK ANGLE | 59.0 DEGREES MINIMUM AND 61.0 DEGREES MAXIMUM |
| HEAD MINOR DIAMETER | 0.655 INCHES MAXIMUM |
| HEAD STYLE | ELIPTICAL COUNTERSUNK |
| HEAD MAJOR DIAMETER | 0.7734 INCHES MINIMUM AND 0.7970 INCHES MAXIMUM |
| LUBRICATION | DRY FILM LUBRICANT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 304 OR STEEL COMP 305 OVERALL |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| NUT DIAMETER | 0.612 INCHES MINIMUM AND 0.614 INCHES MAXIMUM |
| NUT GRIP RANGE | +0.320 TO 0.340 INCHES |
| NUT LENGTH | 1.179 INCHES MINIMUM AND 1.209 INCHES MAXIMUM |
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK |
| SHANK END TYPE | OPEN |
| SPECIAL FEATURES | PASSIVATED BEFORE CADMIUM PLATING |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |