| FASTENER LENGTH | 1.209 INCHES NOMINAL |
| HEAD DIAMETER | 0.474 INCHES MINIMUM AND 0.490 INCHES MAXIMUM |
| HEAD HEIGHT | 0.167 INCHES NOMINAL |
| HEAD STYLE | FILLISTER |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5735 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| MATERIAL | ALUMINUM ALLOY 6061 PRIMARY WASHER |
| MATERIAL | IRON ALLOY OR STEEL COMP 301 FASTENER |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.104 INCHES NOMINAL |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | SPLIT HELICAL RING |
| SECONDARY WASHER RELATIONSHIP TO PRIMARY WASHER | IDENTICAL |
| WASHER QUANTITY | 3 |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 171,7.2.1 MIL STD SINGLE TREATMENT RESPONSE PRIMARY WASHER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 171,5.4.1 MIL STD SINGLE TREATMENT RESPONSE FASTENER |
| SURFACE TREATMENT | ANODIZE PRIMARY WASHER |
| SURFACE TREATMENT | PASSIVATE FASTENER |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.462 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 28 |
| THREAD SERIES DESIGNATOR | UNF |