5305-01-406-4930 SCREW,CLOSE TOLERANCE Index 1560-01-406-4932 SKIN,AIRCRAFT

National Stock Number:
5310-01-406-4931

Federal Supply Class:
5310

National Item Identification Number:
014064931

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:
68A481116-200134087KITCO LLC
68A481116-20014V314SUPPLYCORE LLC
68A481116-200176301THE BOEING COMPANY
68A481116-20018X044DERCO AEROSPACE, INC.


Techincal Specification:
SPECIAL FEATURESUSED ON F15S


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