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Flat Washer NSN 5310-01-656-0558

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 5310-01-656-0558 NSN: 5310-01-656-0558

Features and Characteristics

Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.380 inches and 0.400 inches
Edge Shape
Round
Center Hole Shape
Round
Thickness
0.032 inches
Overall Diameter
Between 0.620 inches and 0.645 inches
Part Name Assigned By Controlling Agency
Washer, flat
Material
Steel comp 1020 or steel comp 1025
Material Specification
Ams5046 assn standard all material responses or astm a109/a109m assn standard 2nd material response
Surface Treatment
Anodize
FSC
5310 Nuts And Washers
NIIN
016560558
NSN
5310016560558

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
NAS1149F0632K
Cage Code:
80205
Status:
A
MSDS:

Q & A

Frequently asked questions for NSN 5310-01-656-0558
What are the manufacturers of nsn 5310016560558?
Does this nsn 5310016560558 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310016560558
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 5310016560558 contain any precious metals?
Precious metals vary between manufacturers.
Does nsn 5310016560558 contain any hazardous materials?
Hazardous material unknown.
What is the ESD classification of nsn 5310016560558?
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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