| EXTENDED WASHER DIAMETER | 1.772 INCHES MINIMUM AND 1.788 INCHES MAXIMUM |
| FASTENER LENGTH | 4.405 INCHES NOMINAL |
| HEAD HEIGHT | 0.522 INCHES MINIMUM AND 0.538 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 ASSN STD 1ST MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 1.000 INCHES |
| WIDTH BETWEEN FLATS | 1.426 INCHES MINIMUM AND 1.440 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.312 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 12 |
| THREAD SERIES DESIGNATOR | UNJF |
| EXTENDED WASHER THICKNESS | 0.084 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |