| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | IRON ALLOY 660 NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5520 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR |
| AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE NUT |
| HARDNESS RATING | 49.0 ROCKWELL C MAXIMUM |
| NUT STYLE | GANG CHANNEL, SELF LOCKING |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| CHANNEL STYLE | STRAIGHT TYPE |
| OVERALL LENGTH | 72.000 INCHES NOMINAL |
| OVERALL WIDTH | 0.516 INCHES MAXIMUM |
| ASSEMBLY OVERALL HEIGHT | 0.281 INCHES MAXIMUM |
| CHANNEL HEIGHT | 0.281 INCHES MAXIMUM |
| NUT SPACING | 0.990 INCHES MINIMUM AND |
| 1.010 INCHES MAXIMUM |
| NUT QUANTITY | 72 |
| NUT COUNTERBORE DEPTH | 0.017 INCHES NOMINAL NUT |
| COUNTERBORE DIAMETER | 0.254 INCHES MINIMUM NUT |
| LUBRICATION | DRY FILM LUBRICANT |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| FEATURES PROVIDED | FLOATING NUT |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS21088L4-8-72 |