| EXTENDED WASHER DIAMETER | 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM |
| FASTENER LENGTH | 0.953 INCHES NOMINAL |
| HEAD HEIGHT | 0.176 INCHES NOMINAL |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| MATERIAL | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 OVERALL |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SECONDARY WASHER MATERIAL THICKNESS | 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM |
| SECONDARY WASHER OUTSIDE DIAMETER | 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM |
| WASHER QUANTITY | 1 |
| WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM |
| SURFACE TREATMENT | PASSIVATE FASTENER |
| SURFACE TREATMENT | PASSIVATE PRIMARY WASHER |
| THREAD CLASS | AL |
| THREAD LENGTH | 0.641 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNF |