| DRIVE POINT QUANTITY | 18 |
| COUNTERBORE DIAMETER | 0.438 INCHES MINIMUM AND 0.437 INCHES MAXIMUM OVERALL |
| COUNTERSINK ANGLE | 85.0 DEGREES MINIMUM OVERALL |
| HARDNESS RATING | 48.0 ROCKWELL C NOMINAL |
| HAZARDOUS SUBSTANCES | CADMIUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | DRY FILM LUBRICANT |
| OVERALL HEIGHT | 0.438 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6304 INTERNATIONAL STD/SPEC ALL MATERIAL RESPONSES AND AMS6487 INTERNATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.4375 INCHES |
| NUT STYLE | SPLINE DRIVE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, SELF-LOCKING, STEEL, 180 KSI FTU, 450 DEG F, FLANGED, MS33787 WRENCHING ELEMENT |
| SPECIAL FEATURES | DRY FILM LUBRICATED. ALLOY STEEL, 17-22A (UNS K14675) PER AMS6304 AND H-11 (UNS T20811) PER AMS6487. OVERALL OUTSIDE DIAM (W/WASHER): 0.733 IN MAX. ULTIMATE AXIAL STRENGTH LBF MIN: 23,200. CADMIUM PLATE IN ACCORDANCE WITH AMS-QQ-P-416, TYPE II, CLASS 2. HARDNESS: 48 HRC MAX. THREADS PER AS8879 BEFORE LUBRICATION. |
| SPECIFICATION/STANDARD DATA | 80205-NAS-21133 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| WASHER OUTSIDE DIAMETER | 0.693 INCHES MINIMUM |
| WASHER THICKNESS | 0.048 INCHES MINIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-416 TYPE II CLASS 2 INTERNATIONAL STD/SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |