| THREAD SERIES DESIGNATOR | UNJF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.780 INCHES NOMINAL |
| FASTENER LENGTH | 1.125 INCHES NOMINAL |
| MATERIAL | NICKEL ALLOY UNS N07001 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5708 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| HEAD HEIGHT | 0.303 INCHES NOMINAL |
| WIDTH BETWEEN FLATS | 0.348 INCHES MINIMUM |
| EXTENDED WASHER DIAMETER | 0.438 INCHES NOMINAL |
| EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND |
| 0.070 INCHES MAXIMUM |
| CHAMFER ANGLE | 28.0 DEGREES MINIMUM AND |
| 0.32 DEGREES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FIRST DIAMETER FROM HEAD | 0.222 INCHES MINIMUM AND |
| 0.232 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.315 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
| SPECIAL FEATURES | HEAD IS DRILLED THROUGH AT WIDTH ACROSS FLATS ON DOUBLE HEXAGON HEAD TO MAKE 4 HOLES TOTAL;4 HOLES IN HEAD ARE 0.060/0.070 INCHES IN DIAMETER,EQUALLY SPACED AND COUNTERSUNK TO 90 DEGREES TO 0.080/0.090 INCHES |
| SPECIFICATION/STANDARD DATA | 96906-MS9706 GOVERNMENT STANDARD |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT,MACHINE-DOUBLE HEXAGON,EXTENDED WASHER HEAD,DRILLED,CORROSION AND HEAT RESISTANT STEEL,.250-28 UNJF-3A |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS9706-16 |