| CRITICALITY CODE JUSTIFICATION | FEAT |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| OVERALL HEIGHT | 0.546 INCHES MINIMUM AND 0.576 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5024 UNS G11370 (AISI 1137) NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250 AND QQ-A-225 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-250 FED SPEC 2ND MATERIAL RESPONSE WASHER |
| MATERIAL | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 7075 WASHER |
| MATERIAL | PLASTIC NYLON LOCKING INSERT |
| MATERIAL | STEEL COMP 1137 NUT |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| NUT HEIGHT | 0.150 INCHES MINIMUM |
| NUT STYLE | FLAT WITH TURNED BACK EDGE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,SELF-LOCKING,CASTELLATED,HEXAGON COUNTERBORED,ASSEMBLED WASHER,250 DEGREE F,NON-METALLIC INSERT(FOR SELF-RETAINING BOLTS) |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY COLOR;AIRWORTHY CERTIFICATED ITEM SUPPLIED WITH PROVENANCE & TRACEABILITY DOCUMENTATION |
| SPECIFICATION/STANDARD DATA | 80205-NAS-21224 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SPECIAL FEATURES | SURFACE FINISH SHALL NOT EXCEED 125 MICROINCHES;NUT IS RED IN COLOR;ULTIMATE TENSILE STRENGTH IS 5600 LBS.MIN |
| WASHER OUTSIDE DIAMETER | 0.840 INCHES MINIMUM |
| WIDTH ACROSS FLATS | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ALODINE PER MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE WASHER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY II,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| SURFACE TREATMENT | CHROMATE WASHER |
| SURFACE TREATMENT | CADMIUM NUT |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |