| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.425 INCHES MINIMUM AND |
| 0.465 INCHES MAXIMUM |
| FASTENER LENGTH | 0.470 INCHES MINIMUM AND |
| 0.500 INCHES MAXIMUM |
| MATERIAL | PLASTIC POLYHEXAMETHYLENE AMIDE PRIMARY WASHER |
| STEEL CORROSION RESISTING FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| SURFACE TREATMENT | PAINT TOP OF HEAD |
| PASSIVATE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 595,NO. 37038 FED STD SINGLE TREATMENT RESPONSE TOP OF HEAD |
| QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| HEAD STYLE | PAN |
| HEAD DIAMETER | 0.256 INCHES MINIMUM AND |
| 0.270 INCHES MAXIMUM |
| HEAD HEIGHT | 0.087 INCHES MINIMUM AND |
| 0.097 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| WASHER QUANTITY | 1 |
| PRIMARY WASHER STYLE | FLAT |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.370 INCHES MINIMUM AND |
| 0.380 INCHES MAXIMUM |
| PRIMARY WASHER MATERIAL THICKNESS | 0.035 INCHES MINIMUM AND |
| 0.045 INCHES MAXIMUM |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 66071 |
| DESIGN CONTROL REFERENCE | SFSW6C8CPL01BK |