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National Stock Number:
5310-01-031-8386
Federal Supply Class:
5310
National Item Identification Number:
010318386
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:
| 2510420 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CRITICALITY CODE JUSTIFICATION | ZZZW | | CROSS-SECTIONAL SHAPE STYLE | BLANK RECTANGULAR | | DEPARTURE FROM CITED DOCUMENT | AS MODIFIED BY SPECIAL QUALITY CONTROL TESTING FOR MK 48 TORPEDO | | HOLE DIAMETER | 0.191 INCHES MINIMUM AND 0.193 INCHES MAXIMUM | | OUTSIDE LEFT CORNER CHAMFER ANGLE | 15.0 DEGREES NOMINAL | | OVERALL DIAMETER | 0.557 INCHES MINIMUM AND 0.559 INCHES MAXIMUM | | MATERIAL | STEEL COMP 316 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | SURFACE FINISH | 63.0 MICROINCHES BOTTOM | | THICKNESS | 0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM |
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