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National Stock Number: 5310-01-056-1536
Federal Supply Class: 5310
National Item Identification Number: 010561536
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:
MC8779 | 62983 | EATON AEROSPACE, LLC | MC8779 | 76050 | EATON AEROSPACE LLC M C AEROSPACE DIV DBA STERER ENGINEERING |
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Techincal Specification:
CENTER HOLE SHAPE STYLE | ROUND | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | HOLE DIAMETER | 0.481 INCHES MINIMUM AND 0.482 INCHES MAXIMUM | OVERALL DIAMETER | 0.732 INCHES MINIMUM AND 0.734 INCHES MAXIMUM | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225 FED SPEC ALL MATERIAL RESPONSES OVERALL | MATERIAL | ALUMINUM ALLOY 2017 OR ALUMINUM ALLOY 2024 OVERALL | PERIPHERAL SHAPE STYLE | ROUND | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYII MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | ANODIZE OVERALL | THICKNESS | 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
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