| NIMIKKEISTOKESKUS NCB FINLAND | A486G |
| BOEING COMPANY, THE | 76301 |
| HOLE DIAMETER | 4.460 INCHES MINIMUM AND 4.470 INCHES MAXIMUM |
| OUTSIDE DIAMETER | 4.625 INCHES MINIMUM AND 4.639 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.120 INCHES NOMINAL |
| MATERIAL THICKNESS | 0.063 INCHES NOMINAL |
| MATERIAL | COPPER ALLOY 172 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-533,TEMPER H FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| A bent spring metal washer with a centrally located hole. It is designed to exert pressure axially when assembled in place. |
