| THREAD SERIES | UNJF |
| NOMINAL THREAD SIZE | 0.190 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | IRON ALLOY 660 NUT |
| STEEL CORROSION RESISTING WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5732, A-286 ASSN STD 1ST MATERIAL RESPONSE OR |
| AMS 5737, A-286 ASSN STD 2ND MATERIAL RESPONSE NUT |
| QQ-S-763, 300 SERIES FED SPEC 1ST MATERIAL RESPONSE OR |
| QQ-S-766, 300 SERIES FED SPEC 2ND MATERIAL RESPONSE WASHER |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND |
| 44.0 ROCKWELL C MAXIMUM |
| NUT STYLE | FLAT WITH TURNED UP EDGE |
| WASHER OUTSIDE DIAMETER | 0.363 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.280 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.245 INCHES MINIMUM AND |
| 0.252 INCHES MAXIMUM |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| NUT COUNTERBORE DEPTH | 0.102 INCHES MINIMUM AND |
| 0.112 INCHES MAXIMUM FIRST END |
| COUNTERBORE DIAMETER | 0.205 INCHES MINIMUM AND |
| 0.210 INCHES MAXIMUM FIRST END |