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National Stock Number:
5310-01-092-0997
Federal Supply Class:
5310
National Item Identification Number:
010920997
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:
| 704-4685199 ITEM 23 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 87861-1512 ITEM 23 | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| MATERIAL | NICKEL ALLOY A OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281,CL A,FORM 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 3.010 INCHES NOMINAL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 4.750 INCHES NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.380 INCHES NOMINAL |
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