- Fits 5/16 fasteners and has 0.320 inch inside size, with 0.593 inch outside size
- Structural aircraft washer with 0.062 inch nominal thickness
- Made of alloy steel (aircraft‑quality) with high tensile strength for load‑bearing joints
- Cadmium plated finish per QQ‑P‑416, Type II, Class 3 specification for enhanced corrosion resistance
| Type | Washer |
| Style | Flat Alloy Steel Aircraft |
| Size | 5/16" |
| Material | Alloy Steel |
| Finish | Cadmium Plated |
| Finish Spec | QQ-P-416 Type 2 Class 3 |
| Color | Yellow |
| NAS/AN Part No. | NA |
| Nominal Inside Dia | 0.32" |
| Nominal Outside Dia | 0.593" |
| Nominal Thickness | 0.062" |
| Inside Dia Range | 0.315" - 0.324" |
| Outside Dia Range | 0.583" - 0.603" |
| Thickness Range | 0.052" - 0.072" |
| Mil-Spec | MS20002-5 |
| Series | MS20002 |
