5310-01-025-1901 WASHER,FLAT Index 5331-01-025-1904 O-RING

National Stock Number:
5310-01-025-1902

Federal Supply Class:
5310

National Item Identification Number:
010251902

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:
5310PL10177009009HINSPEKTORAT WSPARCIA SIL ZBROJNYCH
NAS43DD6-4N80205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONWW-T-785,T3,TY 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
MINIMUM TENSILE STRENGTH62000 POUNDS PER SQUARE INCH
PERIPHERAL SHAPE STYLEROUND
SPECIAL FEATURESDIAMETER 0.377 IN. MIN,0.427 IN. MAX
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
THICKNESS0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM


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