| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.437 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| NUT STYLE | PLAIN DISHED |
| WASHER OUTSIDE DIAMETER | 0.760 INCHES NOMINAL |
| OVERALL HEIGHT | 0.393 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.566 INCHES NOMINAL |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| SPECIAL FEATURES | TENSILE STRENGTH 16100 LB; HEAT TREAT NUT 160 KSI, WASHER 140 KSI PER MIL-H-6875 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | TAPER-LOK WASHERNUT NUT ASSEMBLY SHEAR TYPE |