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Flat Washer NSN 5310-00-726-8172

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 5310-00-726-8172 NSN: 5310-00-726-8172

Features and Characteristics

Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.240 inches and 0.260 inches
Edge Shape
Round
Center Hole Shape
Round
Thickness
Between 0.057 inches and 0.069 inches
Overall Diameter
Between 0.433 inches and 0.458 inches
Material
Aluminum alloy 5052
Material Specification
Qq-a-250/8 h34 federal specification single material response or qq-a-250/8 h36 federal specification single material response or qq-a-250/8 h38 federal specification single material response
FSC
5310 Nuts And Washers
NIIN
007268172
NSN
5310007268172

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
4M23A10
Cage Code:
76301
Status:
A
MSDS:
Part Number:
NAS1197-10
Cage Code:
80205
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7616108000
  • NAICS: 332722
  • SITC: 69440
  • Description: Cotters, cotter-pins, washers and similar articles, of aluminum
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-00-726-8172
What are the manufacturers of nsn 5310007268172?
Does this nsn 5310007268172 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310007268172
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 5310007268172 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310007268172 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310007268172?
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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