- Fits #10 fasteners and has approximately 0.193 inch inside size, with about 0.346 inch outside size, for use with right-hand threads only
- Split lock washer with roughly 0.030 inch thickness for medium‑to‑heavy locking performance
- Made of carbon spring steel for durable spring action in aircraft and industrial assemblies
- Cadmium plated finish per QQ‑P‑416, Type II, Class 3 specification with yellow chromate appearance
| Type | Lock Washer |
| Style | Split Helical |
| Size | 1/4" |
| Material | Carbon Steel |
| Finish | Cadmium Plated with Chromate |
| Finish Spec | QQ‑P‑416, Type II, Class 3 |
| Color | Yellow |
| NAS/AN Part No. | NA |
| Nominal Inside Dia | 0.193" |
| Nominal Outside Dia | 0.49" |
| Nominal Thickness | 0.06" |
| Inside Dia Range | 0.187" - 0.199" |
| Outside Dia Range | 0.338" - 0.354" |
| Thickness Range | 0.025" - 0.035" |
| Mil-Spec | MS35338‑44 |
| Series | MS35338 |
| Hardness | Rockwell C 4050 |
