5310-01-249-4204 WASHER,FLAT Index 5310-01-249-4206 WASHER,FLAT

National Stock Number:
5310-01-249-4205

Federal Supply Class:
5310

National Item Identification Number:
012494205

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:
4M116-0301608033YOUNG J H CO
4M116-0301618986JETRON INC
4M116-0301621215AERO-PLASTICS, INC.
4M116-0301676301THE BOEING COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.186 INCHES MINIMUM AND 0.206 INCHES MAXIMUM
OVERALL DIAMETER0.490 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-19468,GROUP A MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-P-22241,TY1,GRB MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.014 INCHES MINIMUM AND 0.020 INCHES MAXIMUM


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