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Flat Washer NSN 5310-00-436-7294

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 5310-00-436-7294 NSN: 5310-00-436-7294

Features and Characteristics

Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.213 inches and 0.223 inches
Edge Shape
Round
Center Hole Shape
Round
Thickness
Between 0.036 inches and 0.065 inches
Overall Diameter
Between 0.427 inches and 0.447 inches
Special Features
Enamel light gray gloss mil-e-15090 type 2 class 2 one side of flat surface and the od
Material
Copper alloy 268 or copper alloy 260 or copper alloy 240 or copper alloy 230
Material Specification
Qq-b-613 federal specification 1st material response and qq-b-613, 1/2, hard federal specification 2nd material response and qq-b-613, 1/2, hard federal specification 3rd material response and qq-613, 1/2, hard federal specification 4th material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
FSC
5310 Nuts And Washers
NIIN
004367294
NSN
5310004367294

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
328C146C10F1
Cage Code:
97942
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7415210000
  • NAICS: 332722
  • SITC: 69432
  • Description: Copper washers including spring washers not threaded
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-00-436-7294
What are the manufacturers of nsn 5310004367294?
Does this nsn 5310004367294 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310004367294
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 5310004367294 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310004367294 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310004367294?
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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