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National Stock Number:
5310-00-889-2759
Federal Supply Class:
5310
National Item Identification Number:
008892759
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 | | FF-W-92 TYAGR1CLA | 80244 | GENERAL SERVICES ADMINISTRATION FEDERAL SUPPLY SERVICE |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HEAT TREATMENT | T-86 SOLUTION HEAT TREATED, COLD WORKED BY REDUCTION OF 6 PERCENT, ARTIFICALLY AGED | | HOLE DIAMETER | 0.805 INCHES MINIMUM AND 0.842 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | NONDEFINITIVE SPEC/STD DATA | A TYPE AND 1 GRADE AND A CLASS | | OVERALL DIAMETER | 1.743 INCHES MINIMUM AND 1.780 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | PACKAGED IN 5 LB BOX | | THICKNESS | 0.122 INCHES MINIMUM AND 0.177 INCHES MAXIMUM |
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