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Worldwide distributor of NSN parts and consumables located in the USA.

Flat Washer

Model / MPN: 98970A131 | NSN: 5310-01-617-3929
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
5310-01-617-3929
Sold in multiples of
EA
DEMIL
NO
Cross Sectional Shape
Rectangular
Hole Diameter
0.438 inches
Edge Shape
Round
Center Hole Shape
Round
Thickness
Between 0.06 inches and 0.11 inches
Overall Diameter
1.00 inches
End Application
7010-01-600-6765
Part Name Assigned By Controlling Agency
Washer, flat
Material
Steel
Solicitations
Solicitation Description Qty UOM Close Date
SPE5E717TF440 Washer, Flat 1040 EA 10/05/2017
SPE5E719T0786 Washer, Flat 10 EA 10/24/2018
SPE5E719T7097 Washer, Flat 2500 EA 03/11/2019
SPE5E820T9384 Washer, Flat 486 EA 05/11/2020

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98970A131 Cross Reference