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Shouldered Washer NSN 5310-00-550-4357

Item Description

A washer, round in shape, and having a centrally located hole. One bearing surface is flat and unbroken, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.

NSN 5310-00-550-4357 NSN: 5310-00-550-4357

Features and Characteristics

Hole Diameter
Between 0.256 inches and 0.258 inches
Shoulder Diameter
Between 0.365 inches and 0.385 inches
Outside Diameter
Between 0.665 inches and 0.670 inches
Shoulder Height
Between 0.009 inches and 0.017 inches
Material Thickness
Between 0.036 inches and 0.040 inches
Surface Finish
63.0 microinches all surfaces
Special Features
Edges on outer diameter rounded per radius must be tangent and smooth to each side of 0.036 to 0.040
Material
Steel comp 302
Material Specification
Qq-s-763 federal specification single material response or mil-s-5059 military specification single material response
Surface Treatment
Passivate
Style Designator
Shouldered
FSC
5310 Nuts And Washers
NIIN
005504357
NSN
5310005504357

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
6812646
Cage Code:
63005
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 5310-00-550-4357
What are the manufacturers of nsn 5310005504357?
Does this nsn 5310005504357 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310005504357
A washer, round in shape, and having a centrally located hole. one bearing surface is flat and unbroken, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. the thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. for items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing sleeve; or spacer, sleeve. excludes insulator, washer and thrust type washers.
Does nsn 5310005504357 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310005504357 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310005504357?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
15934
FIIG:
A022B0
App. Key:
A
Cond. Code:
1
Status:
A

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  •   Certificate of Conformance
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