| FASTENER LENGTH | 2.250 INCHES NOMINAL |
| HEAD HEIGHT | 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY 400 OVERALL |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.500 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 11 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH BETWEEN FLATS | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |