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Flat Washer NSN 5310-00-728-9957

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 5310-00-728-9957 NSN: 5310-00-728-9957

  Stock Availability

NSN 5310007289957 availability
(as of 11/26/2024).

  • NE: 169
  • NS: 489

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 0.396 inches and 0.416 inches
Edge Shape
Round
Center Hole Shape
Round
Thickness
Between 0.011 inches and 0.025 inches
Overall Diameter
Between 0.865 inches and 0.885 inches
End Application
Mrap - cougar
Features Provided
Casehardened
Hardness Rating
Between 33.0 rockwell c and 38.0 rockwell c
Material
Steel comp 4130 or steel comp 4140 or steel comp 8640 or steel comp 8740
Material Specification
Qq-s-624 federal specification 1st material response or qq-s-626 federal specification 1st material response or qq-s-627 federal specification 1st material response and qq-s-624 federal specification 2nd material response or qq-s-626 federal specification 2nd material response or qq-s-627 federal specification 2nd material response and qq-s-624 federal specification 3rd material response or qq-s-626 federal specification 3rd material response or qq-s-627 federal specification 3rd material response and qq-s-624 federal specification 4th material response or qq-s-626 federal specification 4th material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 1 federal specification single treatment response
FSC
5310 Nuts And Washers
NIIN
007289957
NSN
5310007289957

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
10910174-22
Cage Code:
19207
Status:
A
MSDS:
Part Number:
53510
Cage Code:
34623
Status:
A
MSDS:
Part Number:
731960
Cage Code:
34623
Status:
A
MSDS:
Part Number:
10082583
Cage Code:
A486G
Status:
A
MSDS:
Part Number:
10910174
Cage Code:
19207
Status:
A
MSDS:
Part Number:
5310007289957
Cage Code:
SCY13
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 5310-00-728-9957
What are the manufacturers of nsn 5310007289957?
Does this nsn 5310007289957 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310007289957
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 5310007289957 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310007289957 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310007289957?
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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