| THE BOEING COMPANY | 77272 |
| THE BOEING COMPANY | 81205 |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| HOLE DIAMETER | 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM |
| PERIPHERAL SHAPE STYLE | ROUND |
| CENTER HOLE SHAPE STYLE | ROUND |
| THICKNESS | 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM |
| OVERALL DIAMETER | 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM |
| III HEAT TREATMENT | T-3 SOLUTION HEAT TREATED, COLD WORKED OR T-4 SOLUTION HEAT TREATED, NATURAL AGED |
| MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CHROMATE OVERALL OR ANODIZE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OVERALL OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch ( .8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be . 6 inches ( .15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be . 16 inches ( .4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items. |
