| BEARING SURFACE TYPE | FLAT |
| HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM |
| LOCKING FEATURE | FREE-RUNNING ALL METAL DESIGN OR PREVAILING TORQUE ALL NONMETALLIC DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-8695 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4037 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT-SELF ALIGNING-SELF LOCKING |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.1640 INCHES |
| NUT HEIGHT | 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| SPECIAL FEATURES | NUT IS LUBRICATED WITH CETYL ALCOHOL |
| WIDTH ACROSS FLATS | 0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE II,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES | UNJC |