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National Stock Number:
5310-01-342-0298
Federal Supply Class:
5310
National Item Identification Number:
013420298
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:
| 522 5489364 REV | 53711 | NAVAL SEA SYSTEMS COMMAND | | 5489364 FIND 3 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 5489364 ITEM 3 | 53711 | NAVAL SEA SYSTEMS COMMAND | | L8810603 | 25685 | NAVAL SHIP ENGINEERING CENTER PHILADELPHIA DIVISION SUBMARINE ANTENNA QUALITY ASSURANCE |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 0.879 INCHES MINIMUM AND 0.884 INCHES MAXIMUM | | OVERALL DIAMETER | 2.750 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY 400 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | THICKNESS | 0.380 INCHES NOMINAL |
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