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Flat Washer NSN 5310-01-539-9991

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 5310-01-539-9991 NSN: 5310-01-539-9991

Features and Characteristics

Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.443 inches and 0.463 inches
Edge Shape
Round
Center Hole Shape
1 round
Thickness
Between 0.059 inches and 0.067 inches
Overall Diameter
Between 0.745 inches and 0.770 inches
Environmental Protection
Corrosion resistant
End Application
2330-01-508-7887
Surface Finish
0.1 micrometers all surfaces
Part Name Assigned By Controlling Agency
Washer, flat
Color
Black
Material
Steel comp 1020 or steel uns k02500 or steel comp 1025 or steel uns k02500
Material Specification
Astm-a109, temper 2 (55 ksi min uts) national specification single material response or mil-s-7952 military standard single material response or mil-s-1025 military standard single material response
Surface Treatment
Oxide
Surface Treatment Specification
Mil-c-13924 military standard single treatment response
FSC
5310 Nuts And Washers
NIIN
015399991
NSN
5310015399991

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
NAS1149
Cage Code:
80205
Status:
A
MSDS:
Part Number:
NAS1149F0763B
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: 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 5310-01-539-9991
What are the manufacturers of nsn 5310015399991?
Does this nsn 5310015399991 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310015399991
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 5310015399991 contain any precious metals?
No precious metal content.
Does nsn 5310015399991 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310015399991?
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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