5330-01-523-2320 SEAL,NONMETALLIC ROUND SECTION Index 5310-01-523-2322 NUT,PLAIN,CASTELLATED,HEXAGON

National Stock Number:
5310-01-523-2321

Federal Supply Class:
5310

National Item Identification Number:
015232321

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:
1300178319200US ARMY ARDEC RDECOM


Techincal Specification:
PART NAME ASSIGNED BY CONTROLLING AGENCYFLAT WASHER


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