| EXTENDED WASHER THICKNESS | 0.174 INCHES MINIMUM AND 0.194 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM |
| FASTENER LENGTH | 0.810 INCHES MINIMUM AND 0.830 INCHES MAXIMUM |
| HEAD HEIGHT | 0.188 INCHES NOMINAL |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 7479 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | IRON ALLOY 660 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.312 INCHES |
| SHOULDER LENGTH | 0.285 INCHES MINIMUM FIRST SHOULDER AND 0.305 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| THREAD LENGTH | 0.174 INCHES MINIMUM AND 0.194 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNJF |