| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | ALUMINUM ALLOY 1100 OR |
| ALUMINUM ALLOY 2024 OR |
| ALUMINUM ALLOY 7075 CHANNEL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM AB209 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS-QQ-A-250/4, 25-/5, OR AMS4040 ASSN STD 2ND MATERIAL RESPONSE OR |
| MS-QQ-A-250/12, AMS 4048, OR AMS4049 ASSN STD SINGLE MATERIAL RESPONSE CHANNEL |
| ASTM A827/A827M ASSN STD 1ST MATERIAL RESPONSE OR |
| STM A827/A827M FED STD SINGLE MATERIAL RESPONSE OR |
| STM A827/A827M MIL SPEC SINGLE MATERIAL RESPONSE OR |
| ASTM A29/A29M ASSN STD 4TH MATERIAL RESPONSE OR |
| ASTM A29/A29M ASSN STD 5TH MATERIAL RESPONSE OR |
| ASTM A29/A29M ASSN STD ALL MATERIAL RESPONSES OR |
| ASTMA A29/A29M ASSN STD 6TH MATERIAL RESPONSE NUT |
| SURFACE TREATMENT | CADMIUM NUT |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | UST MEET SALT SPRAY REQUIREMENTS OF AMS-QQ-P-416 TYPE II INTERNATIONAL STD/SPEC 10TH TREATMENT RESPONSE NUT |
| NUT STYLE | GANG CHANNEL, SELF LOCKING |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| CHANNEL STYLE | STRAIGHT TYPE |
| OVERALL LENGTH | 2.688 INCHES NOMINAL |
| OVERALL WIDTH | 0.516 INCHES MAXIMUM |
| ASSEMBLY OVERALL HEIGHT | 0.281 INCHES MAXIMUM |
| CHANNEL HEIGHT | 0.281 INCHES MAXIMUM |
| NUT SPACING | 0.865 INCHES MINIMUM AND |
| 0.885 INCHES MAXIMUM |
| NUT QUANTITY | 4 |
| LUBRICATION | DRY FILM LUBRICANT |
| TEMP RATING | 250.0 DEG FAHRENHEIT NOMINAL |
| SPECIAL FEATURES | SURFACE ROUGHNESS SHALL NOT EXCEED 125 MICROINCHES RA PER AMSE B46.1, NUT ELEMENT SHALL HAVE A HARDNESS OF 49HRC MAX, CHANNEL SURFACE TREATMENT PER PROCUREMENT SPEC NASM25027 |
| SPECIFICATION/STANDARD DATA | 80205-NASM21063 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, SELF-LOCKING GANG CHANNEL, FLOATING, LOW HIEGHT, SEEL, 125 KSI FTU, 250 DEG F |