- Fits #4 fasteners and has 0125 inch inside Size, with 0312 inch outside Size
- Standard version washer with 0032 in thickness
- Made of 1020 Carbon Steel with 55 KSI min UTS
- Cadmium plated finish per QQ-P-416, Type II, Grade/Class 2 specification
| Type | Washer |
| Style | Flat Carbon Steel Aircraft |
| Size | #4 |
| Material | Carbon Steel |
| Finish Spec | QQ-P-416, Type II, Grade/Class 2 |
| Color | Gold |
| NAS Part No. | NAS1149FN432P |
| AN Part No. | AN960-4 |
| Inside Dia. | 0.125 |
| Outside Dia. | 0.312 |
| Inside Dia. Tolerance | ±0.10 |
| Outside Dia. Tolerance | +0.020, -0.005 |
| Thickness | 0.032 |
| Material Spec | 1020 |
