| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.975 INCHES MINIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FASTENER LENGTH | 1.625 INCHES NOMINAL |
| FEATURES PROVIDED | DRY FILM LUBRICANT |
| FIRST DIAMETER FROM HEAD | 0.181 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| HARDNESS RATING | 24.0 ROCKWELL C MINIMUM OVERALL |
| HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.162 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| HOLE CONFIGURATION STYLE | HEXAGON FLATS |
| HOLE DIAMETER | 0.062 INCHES MINIMUM AND 0.066 INCHES MAXIMUM |
| HOLE QUANTITY | 1 |
| HOLE TYPE | DRILLED |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286 CLA FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY K-500 OVERALL |
| MINIMUM YIELD STRENGTH | 85000 POUNDS PER SQUARE INCH |
| MINIMUM TENSILE STRENGTH | 130000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.650 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNJC |
| THREAD QUANTITY PER INCH | 20 |
| WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |