| FASTENER LENGTH | 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HOLE CONFIGURATION STYLE | HEXAGON FLATS |
| HOLE DIAMETER | 0.064 INCHES NOMINAL |
| HOLE QUANTITY | 1 |
| HOLE TYPE | DRILLEDDRILLED |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| POINT CHAMFER ANGLE | 30.0 DEGREES NOMINAL30.0 DEGREES NOMINAL |
| POINT DIAMETER | 0.223 INCHES MINIMUM AND 0.225 INCHES MAXIMUM |
| POINT LENGTH | 0.230 INCHES MINIMUM AND 0.230 INCHES MINIMUM AND 0.280 INCHES MAXIMUM0.280 INCHES MAXIMUM |
| POINT STYLE | FLAT |
| WIDTH BETWEEN FLATS | 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| SURFACE TREATMENT | CADMIUM AND CADMIUM AND CHROMATE OVERALLCHROMATE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HANDRIGHT-HAND |
| THREAD LENGTH | 0.294 INCHES MINIMUM AND 0.294 INCHES MINIMUM AND 0.384 INCHES MAXIMUM0.384 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |