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Flat Washer NSN 5310-00-187-2400

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 5310-00-187-2400 NSN: 5310-00-187-2400

  Stock Availability

NSN 5310001872400 availability
(as of 10/15/2021).

  • NE: 26051
  • NS: 10553
  • AR: 10
  • SV: 76
  • OH: 1

Note: Availability of this item may have changed since it was last checked. Request a quote for an updated price and availability quote.

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Features and Characteristics

Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.380 inches and 0.400 inches
Edge Shape
Round
Center Hole Shape
Round
Thickness
Between 0.057 inches and 0.069 inches
Overall Diameter
Between 0.620 inches and 0.645 inches
Criticality Code Justification
Feat
Special Features
Weapons system essential
Material
Aluminum alloy 2024
Material Specification
Qq-a-250/5 federal specification single material response
Surface Treatment
Chromate or anodize
Surface Treatment Specification
Mil-c-5541 military specification 1st treatment response or mil-a-8625 military specification 2nd treatment response
Nondefinitive Specification/std Data
A type and 2 grade and d class
FSC
5310 Nuts And Washers
NIIN
001872400
NSN
5310001872400

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
CVC754-540LA25
Cage Code:
D9182
Status:
A
MSDS:
Part Number:
AN960PD616
Cage Code:
88044
Status:
A
MSDS:
Part Number:
807285-00
Cage Code:
32345
Status:
A
MSDS:
Part Number:
407 599
Cage Code:
77294
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 5310-00-187-2400
What are the manufacturers of nsn 5310001872400?
Does this nsn 5310001872400 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310001872400
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 5310001872400 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310001872400 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310001872400?
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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