3424-00-408-2560 FURNACE,HEAT TREATING,ELECTRIC Index 1560-00-408-2562 COVER,ACCESS,AIRCRAFT

National Stock Number:
5310-00-408-2561

Federal Supply Class:
5310

National Item Identification Number:
004082561

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.


Manufacturer Information:
13211E754797403CECOM LR CENTER


Techincal Specification:
MATERIALRUBBER SYNTHETIC OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.500 INCHES MINIMUM AND
1.516 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER3.407 INCHES MINIMUM AND
3.469 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.125 INCHES NOMINAL
HARDNESS RATING45.0 SHORE DUROMETER A MINIMUM AND
55.0 SHORE DUROMETER A MAXIMUM
THE MANUFACTURERS DATA
MANUFACTURERS CODE97403
DESIGN CONTROL REFERENCE13211E7547


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