| COUNTERBORE DIAMETER | 0.760 INCHES MINIMUM AND 0.770 INCHES MAXIMUM FIRST END |
| LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| NUT HEIGHT | 0.170 INCHES NOMINAL |
| NUT COUNTERBORE DEPTH | 0.387 INCHES MINIMUM AND 0.407 INCHES MAXIMUM FIRST END |
| NUT STYLE | FLAT WITH TURNED BACK EDGE |
| OVERALL HEIGHT | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5024 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5020 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6323 ASSN STD 4TH MATERIAL RESPONSE OR AMS 6325 ASSN STD 5TH MATERIAL RESPONSE OR AMS 6327 ASSN STD ALL MATERIAL RESPONSES OR AMS 6358 ASSN STD 6TH MATERIAL RESPONSE NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250 FED SPEC 2ND MATERIAL RESPONSE WASHER |
| MATERIAL | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 7075 WASHER |
| MATERIAL | PLASTIC POLYAMIDE LOCKING INSERT |
| MATERIAL | STEEL NUT |
| NOMINAL THREAD SIZE | 0.625 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, HEXAGON, CASTELLATED CAPTIVE WASHER, NYLON INSER, 250 DEG F |
| SPECIAL FEATURES | OPPOSITE SLOTS MUST COINCIDE WITHIN 0.005 AND SLOT AXIS MUST BE WITHIN 0.005 OF THREAD PD AXIS; WRENCH TORQUE 750 MIN IN LB; INSTALLATION ASSEMBLY 600 IN LB; LOCKING TORQUE 150 MAX IN LB; TENSILE STRENGTH 10,000 LBS MIN; WEIGHT APPROX 10.20 LBS/100 |
| WASHER OUTSIDE DIAMETER | 1.209 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.990 INCHES MINIMUM AND 1.002 INCHES MAXIMUM |
| SUPPLEMENTARY FEATURES | LOCKHEED TECHNICAL MANUAL AAP7211.031-4-27 |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE WASHER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| SURFACE TREATMENT | CADMIUM NUT |
| TEMP RATING | 250.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES | UNJF |
| THREAD QUANTITY PER INCH | 18 |