5310-01-173-5831 WASHER,FLAT Index 5640-01-173-5833 INSULATION BLANKET,THERMAL

National Stock Number:
5310-01-173-5832

Federal Supply Class:
5310

National Item Identification Number:
011735832

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:
HS306A34H02731MCDONNELL DOUGLAS HELICOPTER CO INC
HS306A34H10630ANILLO INDUSTRIES LLC
HS306A34H58009MOELLER MANUFACTURING & SUPPLY, LLC
HS306A34H5H383PAC ZONAMATIC INC
HS306A34H86928SEASTROM MANUFACTURING CO INC
HS306A34H8V613THE BOEING COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.452 INCHES MINIMUM AND 0.473 INCHES MAXIMUM
OVERALL DIAMETER0.889 INCHES MINIMUM AND 0.909 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.063 INCHES NOMINAL


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