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National Stock Number:
5310-00-063-2608
Federal Supply Class:
5310
National Item Identification Number:
000632608
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:
| 27979-A-307P | 23515 | FREDERICK CUSTOM MACHINING INC | | 307P | 23515 | FREDERICK CUSTOM MACHINING INC |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | BLANK RECTANGULAR | | HOLE DIAMETER | 0.900 INCHES NOMINAL | | OUTSIDE LEFT CORNER CHAMFER ANGLE | 60.0 DEGREES NOMINAL | | OVERALL DIAMETER | 2.249 INCHES NOMINAL | | MATERIAL | COPPER ALLOY OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SPECIAL FEATURES | CHAMFER EXTENDS ENTER WIDTH OF PERIPHERY | | SURFACE FINISH | 32.0 MICROINCHES INNER | | SURFACE FINISH | 32.0 MICROINCHES OUTER | | SURFACE FINISH | 32.0 MICROINCHES TOP | | SURFACE FINISH | 8.0 MICROINCHES BOTTOM | | THICKNESS | 0.377 INCHES NOMINAL |
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