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Flat Washer NSN 5310-00-456-3104

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 5310-00-456-3104 NSN: 5310-00-456-3104

Features and Characteristics

Cross Sectional Shape
Rectangular
Hole Diameter
Between 1.630 inches and 1.640 inches
Edge Shape
Round
Center Hole Shape
Round w/flats
Thickness
0.270 inches
Overall Diameter
2.250 inches
Hole Width Across Flats
Between 1.385 inches and 1.395 inches
Min. Tensile Strength (psi)
125000 pounds per square inch
Special Features
Interior flats chamfered 0.030 in. By 45.0 degrees both sides
Heat Treatment
As fabricated
Material
Steel comp 4130
Material Specification
Mil-s-6758, cond e4 military specification single material response
FSC
5310 Nuts And Washers
NIIN
004563104
NSN
5310004563104

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
4G13617
Cage Code:
98897
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 5310-00-456-3104
What are the manufacturers of nsn 5310004563104?
Does this nsn 5310004563104 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310004563104
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 5310004563104 contain any precious metals?
No precious metal content.
Does nsn 5310004563104 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310004563104?
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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