| EXTENDED WASHER DIAMETER | 0.877 INCHES MINIMUM AND 0.877 INCHES MINIMUM AND 0.893 INCHES MAXIMUM0.893 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.050 INCHES MINIMUM AND 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM0.060 INCHES MAXIMUM |
| FASTENER LENGTH | 1.358 INCHES NOMINAL1.358 INCHES NOMINAL |
| HEAD HEIGHT | 0.240 INCHES MINIMUM AND 0.240 INCHES MINIMUM AND 0.252 INCHES MAXIMUM0.252 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHERDOUBLE HEXAGON EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629 ASSN STD 1ST MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES0.500 INCHES |
| WIDTH BETWEEN FLATS | 0.679 INCHES MINIMUM AND 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM0.690 INCHES MAXIMUM |
| THREAD CLASS | 3A3A |
| THREAD DIRECTION | RIGHT-HANDRIGHT-HAND |
| THREAD LENGTH | 0.703 INCHES NOMINAL0.703 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 2020 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |