| EXTENDED WASHER DIAMETER | 0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.265 INCHES NOMINAL |
| FASTENER LENGTH | 1.650 INCHES MINIMUM AND 1.850 INCHES MAXIMUM |
| HEAD HEIGHT | 0.625 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | ISO 898-1 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.630 INCHES |
| SPECIAL FEATURES | FINISH:IAW 12424710 METHOD 4 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.655 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNRF |
| WIDTH BETWEEN FLATS | 0.618 INCHES MINIMUM AND 0.627 INCHES MAXIMUM |