5945-01-452-5473 RELAY,ELECTROMAGNETIC Index 4330-01-452-5475 FILTER UNIT,FLUID,PRESSURE

National Stock Number:
5310-01-452-5474

Federal Supply Class:
5310

National Item Identification Number:
014525474

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:
6230505-1253711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER3.510 INCHES MINIMUM AND 3.515 INCHES MAXIMUM
OVERALL DIAMETER4.248 INCHES MINIMUM AND 4.253 INCHES MAXIMUM
MATERIALPLASTIC ACETAL OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.250 INCHES NOMINAL


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