5310-01-012-7411 WASHER,FLAT Index 5970-01-012-7415 INSULATOR,BUSHING

National Stock Number:
5310-01-012-7413

Federal Supply Class:
5310

National Item Identification Number:
010127413

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:
13219E413397403CECOM LR CENTER


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.975 INCHES NOMINAL
OVERALL DIAMETER3.500 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000,COMPOUND 2BC620A14B14C12E34 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALRUBBER NATURAL OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.157 INCHES MINIMUM AND 0.219 INCHES MAXIMUM


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