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National Stock Number:
5310-00-502-5323
Federal Supply Class:
5310
National Item Identification Number:
005025323
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:
| 5025323 | 19206 | ARMY, UNITED STATES DEPARTMENT OF THE BUSINESS DEVELOPMENT DBA WATERVLIET ARSENAL |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 2.000 INCHES MINIMUM AND 2.010 INCHES MAXIMUM | | OVERALL DIAMETER | 3.980 INCHES MINIMUM AND 4.000 INCHES MAXIMUM | | MATERIAL | COPPER OVERALL | | MINIMUM TENSILE STRENGTH | 90000 POUNDS PER SQUARE INCH | | MINIMUM YIELD STRENGTH | 40000 POUNDS PER SQUARE INCH | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE FINISH | 63.0 MICROINCHES BOTTOM | | SURFACE FINISH | 63.0 MICROINCHES TOP | | THICKNESS | 0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
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