| THREAD SERIES | UNJF | 
| NOMINAL THREAD SIZE | 0.250 INCHES | 
| THREAD QUANTITY PER INCH | 28 | 
| THREAD CLASS | 3B | 
| THREAD DIRECTION | RIGHT-HAND | 
| MATERIAL | STEEL COMP 304 OR | 
|  | STEEL COMP 305 OVERALL | 
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC ALL MATERIAL RESPONSES OVERALL | 
| SURFACE TREATMENT | CADMIUM AND | 
|  | CHROMATE OVERALL | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | 
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK | 
| NUT DIAMETER | 0.325 INCHES MINIMUM AND | 
|  | 0.327 INCHES MAXIMUM | 
| NUT LENGTH | 0.567 INCHES MAXIMUM | 
| NUT GRIP RANGE | 0.100 TO 0.160 INCHES | 
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN | 
| LUBRICATION | DRY FILM LUBRICANT | 
| HEAD STYLE | ELIPTICAL COUNTERSUNK | 
| HEAD HEIGHT | 0.040 INCHES NOMINAL | 
| HEAD MAJOR DIAMETER | 0.436 INCHES MINIMUM AND | 
|  | 0.440 INCHES MAXIMUM | 
| HEAD MINOR DIAMETER | 0.370 INCHES MINIMUM AND | 
|  | 0.374 INCHES MAXIMUM | 
| HEAD MAJOR COUNTERSINK ANGLE | 75.75 DEGREES MINIMUM AND | 
|  | 76.25 DEGREES MAXIMUM | 
| HEAD MINOR COUNTERSINK ANGLE | 59.75 DEGREES MINIMUM AND | 
|  | 60.25 DEGREES MAXIMUM | 
| SHANK END TYPE | OPEN | 
| TEMP RATING | 450.0 DEG FAHRENHEIT MAXIMUM | 
| SPECIFICATION/STANDARD DATA | 80205-NAS1734 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |