| COLOR | BLACK OVERALL |
| FASTENER LENGTH | 0.359 INCHES MINIMUM AND 0.381 INCHES MAXIMUM |
| HARDNESS RATING | 80.0 ROCKWELL B MINIMUM OVERALL |
| HEAD DIAMETER | 0.134 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
| HEAD HEIGHT | 0.083 INCHES MINIMUM AND 0.086 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL |
| MINIMUM TENSILE STRENGTH | 80000 POUNDS PER SQUARE INCH |
| MINIMUM YIELD STRENGTH | 30000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.086 INCHES |
| NONDEFINITIVE SPEC/STD DATA | 6 TYPE |
| WIDTH ACROSS FLATS | 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM |
| SURFACE TREATMENT | OXIDE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.323 INCHES MINIMUM AND 0.381 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 56 |
| THREAD SERIES DESIGNATOR | UNC |