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National Stock Number:
5310-00-526-9827
Federal Supply Class:
5310
National Item Identification Number:
005269827
Description:
WASHER,FLAT
Detail:
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 (0.8 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 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) 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.
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Manufacturer Information:
| 4M36-02028 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HEAT TREATMENT | T-36 SOLUTION HEAT TREATED, COLD WORKED BY REDUCTION OF 6 PERCENT OR T-4 SOLUTION HEAT TREATED, NATURAL AGED | | HOLE DIAMETER | 0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM | | OVERALL DIAMETER | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/5,T3 OR T4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/4 T3 OR T4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6 T4 FED SPEC 1ST MATERIAL RESPONSE AND WW-T-789 FED SPEC 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 6061 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ANODIZE OVERALL | | THICKNESS | 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM |
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