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National Stock Number:
5310-00-794-9958
Federal Supply Class:
5310
National Item Identification Number:
007949958
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:
| 9982420-1 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HEAT TREATMENT | ANNEALED | | HOLE DIAMETER | 1.560 INCHES MINIMUM AND 1.590 INCHES MAXIMUM | | OVERALL DIAMETER | 3.210 INCHES MINIMUM AND 3.230 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-N-14411,ANNEALED MIL SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | NICKEL ALLOY AND ZINC ALLOY OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-V-173 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | VARNISH OVERALL | | THICKNESS | 0.025 INCHES NOMINAL |
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