5310-00-245-4718 WASHER,FLAT Index 5310-00-245-4720 NUT,PLAIN,HEXAGON

National Stock Number:
5310-00-245-4719

Federal Supply Class:
5310

National Item Identification Number:
002454719

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:
310-0052-00079807WROUGHT WASHER MFG., INC.


Techincal Specification:
MATERIALSTEEL COMP 301 OR
STEEL COMP 302 OR
STEEL COMP 316 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.387 INCHES MINIMUM AND
0.393 INCHES MAXIMUM
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.870 INCHES MINIMUM AND
0.880 INCHES MAXIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.057 INCHES MINIMUM AND
0.063 INCHES MAXIMUM
THE MANUFACTURERS DATA
MANUFACTURERS CODE79807
DESIGN CONTROL REFERENCE310-0052-000


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