5310-01-159-6589 WASHER,KEY Index 5310-01-159-6591 WASHER,FLAT

National Stock Number:
5310-01-159-6590

Federal Supply Class:
5310

National Item Identification Number:
011596590

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:
4HC4145152OSHKOSH CORP
4HC4175Q65OSHKOSH DEFENSE LLC
6V849511083CATERPILLAR INC
760 59875732ELME NORTH AMERICA INC
991 411134914HIAB USA INC


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HARDNESS RATING225.0 BRINELL STANDARD MINIMUM AND 300.0 BRINELL STANDARD MAXIMUM
HEAT TREATMENTQUENCHED AND TEMPERED
HOLE DIAMETER10.5 MILLIMETERS NOMINAL
OVERALL DIAMETER22.0 MILLIMETERS NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION8.8,FSCM 21969 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
MINIMUM TENSILE STRENGTH113783 POUNDS PER SQUARE INCH
PERIPHERAL SHAPE STYLEROUND
SURFACE TREATMENTZINC OVERALL
THICKNESS2.0 MILLIMETERS NOMINAL


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