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National Stock Number:
5310-01-335-6265
Federal Supply Class:
5310
National Item Identification Number:
013356265
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:
| SS4409-081 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.265 INCHES NOMINAL | | OVERALL DIAMETER | 0.245 INCHES MINIMUM AND 2.270 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | Q-Q-A-2504, T3 OR T4 NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | ALUMINUM ALLOY 2024 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | TREAT PER MIL-C-5541 OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC ALL TREATMENT RESPONSES OVERALL | | SURFACE TREATMENT | ANODIZE OVERALL | | THICKNESS | 0.090 INCHES NOMINAL |
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