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Flat Washer NSN 5310-00-153-0990

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 5310-00-153-0990 NSN: 5310-00-153-0990

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Features and Characteristics

Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.196 inches and 0.199 inches
Edge Shape
Round
Center Hole Shape
Round
Thickness
Between 0.044 inches and 0.052 inches
Overall Diameter
Between 0.304 inches and 0.305 inches
Hardness Rating
Between 79.4 rockwell superficial 15-n and 83.0 rockwell superficial 15-n
Material
Steel comp 631
Material Specification
Ams 5528 assn standard single material response
Test Data Document
73030-magnetic inspection hs447 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
FSC
5310 Nuts And Washers
NIIN
001530990
NSN
5310001530990

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
732107-3
Cage Code:
73030
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318220000
  • NAICS: 332722
  • SITC: 69422
  • Description: Washers other than lock washers, iron or steel
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-00-153-0990
What are the manufacturers of nsn 5310001530990?
Does this nsn 5310001530990 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310001530990
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 5310001530990 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310001530990 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310001530990?
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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