| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE |
| STEEL CORROSION RESISTING FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | FED 66 FED STD ALL MATERIAL RESPONSES FASTENER |
| SURFACE TREATMENT | PASSIVATE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND |
| 45.0 ROCKWELL C MAXIMUM FASTENER |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.094 INCHES NOMINAL |
| LOCKING FEATURE | STRIP OR |
| PELLET OR |
| PATCH THREADS |
| POINT STYLE | CUP |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND |
| 4 STYLE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81348 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FF-S-200A TYPE 1 STYLE 4 |