THREAD SERIES DESIGNATOR | UNF |
NOMINAL THREAD DIAMETER | 0.190 INCHES |
THREAD QUANTITY PER INCH | 32 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.282 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
FASTENER LENGTH | 0.344 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
MATERIAL | STEEL OVERALL |
SURFACE TREATMENT | CADMIUM AND |
| CHROMATE OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND |
| 45.0 ROCKWELL C MAXIMUM OVERALL |
MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
MINIMUM YIELD STRENGTH | 155000 POUNDS PER SQUARE INCH |
HEAD STYLE | FLAT CHAMFER |
HEAD DIAMETER | 0.303 INCHES MINIMUM AND |
| 0.312 INCHES MAXIMUM |
HEAD HEIGHT | 0.185 INCHES MINIMUM AND |
| 0.190 INCHES MAXIMUM |
INTERNAL DRIVE STYLE | HEXAGON |
WIDTH ACROSS FLATS | 0.1562 INCHES MINIMUM AND |
| 0.1587 INCHES MAXIMUM |
LOCKING FEATURE | STRIP OR |
| PATCH THREADS |
SURFACE FINISH | 32.0 MICROINCHES THREADS |
NONDEFINITIVE SPEC/STD DATA | 6 TYPE |
SPEC/STD CONTROLLING DATA | |
MANUFACTURERS CODE | 81348 |
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FF-S-86 |
MANUFACTURERS CODE | 96906 |
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS16998-26L |