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

Flat Washer

Model / MPN: FFW92 | NSN: 5310-00-001-4858
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
5310-00-001-4858
Sold in multiples of
100 EA
DEMIL
NO
Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.115 inches and 0.135 inches
Edge Shape
Round
Center Hole Shape
1 round
Center Hole Shape
Round
Thickness
Between 0.022 inches and 0.042 inches
Overall Diameter
Between 0.307 inches and 0.332 inches
Color
Black
Material
Stainless steel or steel comp 321 or steel comp 347 or steel comp 348
Material Specification
Mil-s-5059 military specification 1st material response and mil-s-6721 military specification 2nd material response and mil-s-6721 military specification 3rd material response and mil-s-6721 military specification 4th material response
Surface Treatment
Oxide film
Surface Treatment Specification
Mil-c-13924 military specification single treatment response
Nondefinitive Specification/std Data
A type and 1 grade and b class

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FFW92 Cross Reference
  • AN960XC4
  • 21125315900
  • 10116489