| FASTENER LENGTH | 5.610 INCHES MINIMUM AND 5.650 INCHES MAXIMUM |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HOLE CONFIGURATION STYLE | HEXAGON CORNERS |
| HOLE DIAMETER | 0.070 INCHES NOMINAL |
| HOLE QUANTITY | 1 |
| HOLE TYPE | DRILLED |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OVERALL |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| SHOULDER DIAMETER | 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM FIRST SHOULDER |
| WIDTH BETWEEN FLATS | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.090 INCHES MINIMUM AND 1.110 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |