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National Stock Number:
5310-00-531-3977
Federal Supply Class:
5310
National Item Identification Number:
005313977
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:
| 2793809-1 | 96214 | RAYTHEON COMPANY | | 588941-95 | 73030 | HAMILTON SUNDSTRAND CORPORATION |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 302.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 372.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM | | HOLE DIAMETER | 0.139 INCHES MINIMUM AND 0.146 INCHES MAXIMUM | | OVERALL DIAMETER | 0.540 INCHES MINIMUM AND 0.550 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5504 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5612 ASSN STD 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 410 OR STEEL COMP 403 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | THICKNESS | 0.0895 INCHES MINIMUM AND 0.0905 INCHES MAXIMUM |
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