| EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |
| FASTENER LENGTH | 0.938 INCHES NOMINAL |
| FEATURES PROVIDED | FINISHED HEAD |
| HEAD HEIGHT | 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE |
| HOLE DIAMETER | 0.032 INCHES MINIMUM AND 0.042 INCHES MAXIMUM |
| HOLE QUANTITY | 4 |
| HOLE TYPE | DRILLED |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 630 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.867 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNJF |