| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL COMP 8740 OR |
| STEEL COMP 8630 OR |
| STEEL COMP 4027 OR |
| STEEL COMP 4037 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS6325 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS6280 ASSN STD SINGLE MATERIAL RESPONSE OR |
| ASTMA304 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS6300 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND |
| 44.0 ROCKWELL C MAXIMUM |
| NUT STYLE | HEXAGON |
| WASHER OUTSIDE DIAMETER | 0.420 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.204 INCHES MINIMUM AND |
| 0.316 INCHES MAXIMUM |
| WASHER THICKNESS | 0.019 INCHES MINIMUM |
| WIDTH ACROSS FLATS | 0.304 INCHES MINIMUM AND |
| 0.316 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| TEMP RATING | 450.0 DEG FAHRENHEIT NOMINAL |
| SPECIAL FEATURES | ITEM IS FAA CERTIFIED |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 81205 |
| DESIGN CONTROL REFERENCE | BACN11AG4 |