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National Stock Number:
5310-99-964-4009
Federal Supply Class:
5310
National Item Identification Number:
999644009
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:
| 0S85916 | U1515 | DGS&E TIG IRC | | SS22A315 | K5728 | G E C MARCONI AVIONICS LTD | | SS22A315 | U2248 | SELEX ELSAG LTD |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | COLOR | BLACK | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 10.75 MILLIMETERS MINIMUM AND 11.25 MILLIMETERS MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | BS 1470 HS30 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 21.75 MILLIMETERS MINIMUM AND 22.25 MILLIMETERS MAXIMUM | | THICKNESS | 0.50 MILLIMETERS NOMINAL |
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