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National Stock Number:
5310-01-149-4055
Federal Supply Class:
5310
National Item Identification Number:
011494055
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:
| 72A097201-2031 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 2.396 INCHES MINIMUM AND 2.416 INCHES MAXIMUM | | OVERALL DIAMETER | 3.458 INCHES MINIMUM AND 3.478 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-A-5052,H34 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY 5052 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIFICATION/STANDARD DATA | 76301-72A097201 MANUFACTURERS STANDARD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-A-250/8,H34 FED SPEC 1ST TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ANODIZE AND ENAMEL AND PRIMER OVERALL | | THICKNESS | 0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM |
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