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Flat Washer NSN 5310-00-889-1221

Item Description

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.

NSN 5310-00-889-1221 NSN: 5310-00-889-1221

Features and Characteristics

Thickness
Between 0.053 inches and 0.073 inches
Overall Diameter
Between 0.428 inches and 0.448 inches
Special Features
Materialcu0058; surf treatcda000; documentqq-p-416, ty1, cl1
FSC
5310 Nuts And Washers
NIIN
008891221
NSN
5310008891221

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
91100379
Cage Code:
72314
Status:
A
MSDS:

Q & A

Frequently asked questions for NSN 5310-00-889-1221
What are the manufacturers of nsn 5310008891221?
Does this nsn 5310008891221 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310008891221
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.
Does nsn 5310008891221 contain any precious metals?
No precious metal content.
Does nsn 5310008891221 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310008891221?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
13393
FIIG:
A022B0
App. Key:
B
Cond. Code:
1
Status:
A

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