5310-01-359-0249 WASHER,FLAT Index 5310-01-359-0252 WASHER,RECESSED

National Stock Number:
5310-01-359-0250

Federal Supply Class:
5310

National Item Identification Number:
013590250

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:
5067-PH-15255566MATTHEW WARREN, INC
717801661-01004939LOCKHEED MARTIN CORPORATION


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.152 INCHES MINIMUM AND 0.162 INCHES MAXIMUM
OVERALL DIAMETER0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONIL-P-79,TYPE PBE ASSN STD 10TH MATERIAL RESPONSE OVERALL
MATERIALPLASTIC PHENOLIC AND PAPER OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.031 INCHES NOMINAL


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