- Fits 1/4 inch fasteners and has 0.262 inch inside size, with 0.502 inch outside size
- External tooth lock washer with 0.026 inch nominal thickness for improved resistance to loosening
- Made of 1050 carbon spring steel, hardened to Rockwell C 40-50 for strong biting action
- Cadmium plated finish per QQ‑P‑416, Type II, Class 3 specification for corrosion protection and yellow chromate appearance
| Type | Lock Washer |
| Style | External Tooth |
| 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 | 0.262" |
| Nominal Outside Dia | 0.51" |
| Nominal Thickness | 0.03" |
| Inside Dia Range | 0.256" - 0.267" |
| Outside Dia Range | 0.494" - 0.510" |
| Thickness Range | 0.023" - 0.028" |
| Mil-Spec | MS35335‑33 |
| Series | MS35335 |
| Hardness | Rockwell C 4050 |
| Tooth Style | Flat External Teeth, Type B |
