| COUNTERBORE DIAMETER | 0.288 INCHES NOMINAL WASHER |
| HOLE CONFIGURATION STYLE | CONFIGURATION G |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| OVERALL HEIGHT | 0.281 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS A286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT STYLE | PLAIN DISHED |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | TAPER-LOK WASHERNUT NUT ASSEMBLY SHEAR TYPE |
| SPECIAL FEATURES | HEAT TREAT NUT 160 KSI MIN PER MIL-H-6875; HEAT TREAT WASHER 140 KSI MIN PER MIL-H-6875; TENSIL STRENGTH 5060 LBS |
| WASHER OUTSIDE DIAMETER | 0.460 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.313 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES | UNJF |