5310-01-169-8273 WASHER,FLAT Index 5310-01-169-8276 WASHER,RECESSED

National Stock Number:
5310-01-169-8274

Federal Supply Class:
5310

National Item Identification Number:
011698274

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:
4M116-0301708033YOUNG J H CO
4M116-0301718986JETRON INC
4M116-0301721215AERO-PLASTICS, INC.
4M116-0301776301THE BOEING COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.318 INCHES MINIMUM AND 0.338 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 TYPE 1,GRADE B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.055 INCHES MINIMUM AND 0.070 INCHES MAXIMUM


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