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National Stock Number:
5310-00-297-0278
Federal Supply Class:
5310
National Item Identification Number:
002970278
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:
| 5A10244 | 95201 | NAPCO INTERNATIONAL LLC |
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Techincal Specification:
| MATERIAL | CELLULOSE OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-F-1148,GR CH MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.625 INCHES NOMINAL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 1.750 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.120 INCHES MINIMUM AND | | 0.140 INCHES MAXIMUM | | HARDNESS RATING | 50.0 ROCKWELL R NOMINAL | | SPECIAL FEATURES | FUNGUS TREATED | | MINIMUM TENSILE STRENGTH | 6000 POUNDS PER SQUARE INCH |
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