5310-00-021-2766 WASHER,FLAT Index 1560-00-021-2769 PLATE,STRUCTURAL,AIRCRAFT

National Stock Number:
5310-00-021-2768

Federal Supply Class:
5310

National Item Identification Number:
000212768

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:
114C3333-177272THE BOEING COMPANY


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.507 INCHES MINIMUM AND 1.527 INCHES MAXIMUM
OVERALL DIAMETER2.020 INCHES MINIMUM AND 2.060 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 301 OVERALL
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.022 INCHES MINIMUM AND 0.042 INCHES MAXIMUM


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