| FASTENER LENGTH | 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| HEAD HEIGHT | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| HOLE CONFIGURATION STYLE | ROUND |
| HOLE DIAMETER | 0.035 INCHES MINIMUM AND 0.040 INCHES MAXIMUM |
| HOLE QUANTITY | 4 |
| HOLE TYPE | DRILLED |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4340 OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| POINT LENGTH | 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| POINT STYLE | CHAMFER DOG |
| POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| POINT DIAMETER | 0.182 INCHES MINIMUM AND 0.183 INCHES MAXIMUM |
| SPECIAL FEATURES | UNDERCUT BETWEEN THD PORTION AND POINT,0.167/0.172 IN. DIA,0.050/0.090 IN. WIDE |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3A |
| THREAD LENGTH | 0.220 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNC |
| THREAD QUANTITY PER INCH | 20 |