| BEARING SURFACE TYPE | FLAT |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM D4066,COMP A,TYPE I ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281,CL A OR B FED SPEC SINGLE MATERIAL RESPONSE NUT |
| MATERIAL | NICKEL ALLOY 400 NUT |
| MATERIAL | PLASTIC LOCKING INSERT |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,SELF-LOCKING,HEXAGON,REGULAR HEIGHT(NON-METALLIC INSERT)250DEG F,NICKEL-COPPER ALLOY |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 2.50 INCHES |
| NUT HEIGHT | 3.078 INCHES MINIMUM AND 3.204 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| SPECIFICATION/STANDARD DATA | 80205-NAS-17828 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| WIDTH ACROSS FLATS | 3.875 INCHES MINIMUM AND 4.020 INCHES MAXIMUM |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 4 |
| THREAD SERIES | UNC |