| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.250 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 4.500 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 5.125 INCHES NOMINAL |
| FASTENER LENGTH | 5.922 INCHES MINIMUM AND 5.952 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.433 INCHES MINIMUM AND 0.436 INCHES MAXIMUM |
| HEAD DIAMETER | 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| HEAD HEIGHT | 0.407 INCHES NOMINAL |
| HEAD STYLE | BEVEL-CONICAL |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL | STEEL COMP E4340 OR STEEL COMP 4140 OVERALL |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.438 INCHES |
| SECOND DIAMETER FROM HEAD | 0.360 INCHES MINIMUM AND 0.370 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.375 INCHES MINIMUM AND 0.378 INCHES MAXIMUM |
| SURFACE TREATMENT | NICKEL AND CADMIUM OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THIRD DIAMETER FROM HEAD | 0.433 INCHES MINIMUM AND 0.436 INCHES MAXIMUM |
| THREAD LENGTH | 5.797 INCHES MINIMUM AND 5.827 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |