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National Stock Number:
5310-01-070-3000
Federal Supply Class:
5310
National Item Identification Number:
010703000
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:
| 709-4789050 ITEM 29 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 709-4789050 ITEM 29 | 6K404 | BASIC RUBBER AND PLASTICS CO. | | RW070767 | 5S153 | R-WAY GASKET & SUPPLY CO INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HARDNESS RATING | 35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM | | HOLE DIAMETER | 0.500 INCHES NOMINAL | | OVERALL DIAMETER | 2.250 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-R-6855,CL 2,TY A,GR 40 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | RUBBER SYNTHETIC OVERALL | | MINIMUM TENSILE STRENGTH | 1300 POUNDS PER SQUARE INCH | | PERIPHERAL SHAPE STYLE | ROUND | | THICKNESS | 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM |
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