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National Stock Number: 5310-01-160-3973
Federal Supply Class: 5310
National Item Identification Number: 011603973
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:
FF-W-92 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | MS15795-520 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | MS15795-520 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
CENTER HOLE SHAPE STYLE | ROUND | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | HOLE DIAMETER | 0.649 INCHES MINIMUM AND 0.686 INCHES MAXIMUM | OVERALL DIAMETER | 1.305 INCHES MINIMUM AND 1.342 INCHES MAXIMUM | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-576 FED SPEC ALL MATERIAL RESPONSES OVERALL | MATERIAL | COPPER ALLOY 113 OR COPPER ALLOY 116 OR COPPER ALLOY 120 OR COPPER ALLOY 121 OR COPPER ALLOY 122 OR COPPER ALLOY 123 OR COPPER ALLOY 125 OR COPPER ALLOY 127 OR COPPER ALLOY 128 OR COPPER ALLOY 130 OVERALL | NONDEFINITIVE SPEC/STD DATA | A TYPE AND 1 GRADE AND F CLASS | PERIPHERAL SHAPE STYLE | ROUND | THICKNESS | 0.074 INCHES MINIMUM AND 0.121 INCHES MAXIMUM |
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