| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.126 INCHES MINIMUM AND |
| 0.188 INCHES MAXIMUM |
| FASTENER LENGTH | 0.178 INCHES MINIMUM AND |
| 0.198 INCHES MAXIMUM |
| MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE |
| STEEL CORROSION RESISTING FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| FED-STD-66, 300 SERIES FED STD ALL MATERIAL RESPONSES FASTENER |
| SURFACE TREATMENT | OXIDE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924, CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER |
| COLOR | BLACK FASTENER |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND |
| 45.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.062 INCHES NOMINAL |
| LOCKING FEATURE | PATCH OR |
| PELLET OR |
| STRIP THREADS |
| POINT STYLE | CUP |