| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.120 INCHES MINIMUM AND 0.150 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.128 INCHES MINIMUM AND 1.188 INCHES MAXIMUM |
| CRITICALITY CODE JUSTIFICATION | AATB |
| EXTENDED WASHER THICKNESS | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| FASTENER LENGTH | 1.938 INCHES NOMINAL AND 1.928 INCHES MINIMUM AND 1.948 INCHES MAXIMUM |
| FIRST DIAMETER FROM HEAD | 0.246 INCHES MINIMUM AND 0.249 INCHES MAXIMUM |
| HARDNESS RATING | 248.0 BRINELL STANDARD MINIMUM AND 341.0 BRINELL STANDARD MAXIMUM |
| HEAD HEIGHT | 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON |
| HOLE QUANTITY | 4 |
| HOLE TYPE | DRILLED |
| MATERIAL DOCUMENT AND CLASSIFICATION | DTD 5026 MIL STD SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| SECOND DIAMETER FROM HEAD | 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM |
| SPECIAL FEATURES | HOLE CONFIGURATION F 0.060 |
| WIDTH BETWEEN FLATS | 0.3025 INCHES MINIMUM AND 0.3225 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DTD 939 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | SILVER |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.780 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |