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Shouldered Washer NSN 5310-00-343-4787

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 5310-00-343-4787 NSN: 5310-00-343-4787

Features and Characteristics

Hole Diameter
Between 1.988 inches and 1.990 inches
Shoulder Diameter
Between 2.1283 inches and 2.1290 inches
Outside Diameter
Between 2.680 inches and 2.700 inches
Shoulder Height
Between 0.260 inches and 0.270 inches
Material Thickness
Between 0.059 inches and 0.060 inches
Material
Copper alloy 630
Material Specification
Ams 4640 assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
Style Designator
Shouldered
FSC
5310 Nuts And Washers
NIIN
003434787
NSN
5310003434787

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
ST4M130-24002
Cage Code:
76301
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7415210000
  • NAICS: 332722
  • SITC: 69432
  • Description: Copper washers including spring washers not threaded
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-00-343-4787
What are the manufacturers of nsn 5310003434787?
Does this nsn 5310003434787 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310003434787
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 5310003434787 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310003434787 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310003434787?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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