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Flat Washer

Model / MPN: 4089327 | NSN: 5310-01-655-5534
ITAR Registered seal

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 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.

Product Details
NATO Stock Number
Sold in multiples of
Solicitation Description Qty UOM Close Date
SPE5E716TB917 Washer, Flat 205 EA 07/13/2016
SPE5E717T6005 Washer, Flat 205 EA 02/21/2017
SPE5E717T7747 Washer, Flat 205 EA 04/05/2017
SPE5E717T8671 Washer, Flat 347 EA 04/24/2017
SPE4A518T085S Washer, Flat 1000 EA 12/26/2017
SPE4A518T10N4 Washer, Flat 20 EA 07/20/2018

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4089327 Cross Reference