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Wearing Ring NSN 4320-00-740-3478

Item Description

A cylindrical item with or without flange(s), designed to be inserted in a pump casing or secured to the impeller of a centrifugal pump. It is used for the purpose of providing a close running clearance between the impeller and casing in order to prevent or overcome leakage due to erosion. It may also be used as a diffuser ring in the suction and discharge throats of valves.

NSN 4320-00-740-3478 NSN: 4320-00-740-3478

Features and Characteristics

Body Style
Plain w/internal flange
Chamfer Length
0.125 inches outside right corner
Overall Length
0.969 inches
Bolt Circle Diameter
3.000 inches
Body Outside Diameter
Between 4.514 inches and 4.516 inches
Body Inside Diameter
4.000 inches
Unthreaded Mounting Hole Diameter
Between 0.219 inches and 0.438 inches
Bolt Hole Quantity
10
Internal Flange Inside Diameter
Between 2.500 inches and 2.501 inches
Internal Flange Width
0.375 inches
Corner Shape
Square outside left corner
Chamfer Angle
45.0 degrees outside right corner
Material
Copper alloy
FSC
4320 Power And Hand Pumps
NIIN
007403478
NSN
4320007403478

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
10333
Cage Code:
54402
Status:
A
MSDS:
Part Number:
17491-P
Cage Code:
93232
Status:
A
MSDS:
Part Number:
RY-129100-A
Cage Code:
54402
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8413919520
  • NAICS: 333911
  • SITC: 74291
  • Description: Parts, nesoi, of pumps for liquids
  • End Use (Code 21100):
    Industrial engines

Q & A

Frequently asked questions for NSN 4320-00-740-3478
What are the manufacturers of nsn 4320007403478?
Does this nsn 4320007403478 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4320007403478
A cylindrical item with or without flange(s), designed to be inserted in a pump casing or secured to the impeller of a centrifugal pump. it is used for the purpose of providing a close running clearance between the impeller and casing in order to prevent or overcome leakage due to erosion. it may also be used as a diffuser ring in the suction and discharge throats of valves.
Does nsn 4320007403478 contain any precious metals?
Precious metal content is unknown.
Does nsn 4320007403478 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4320007403478?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22534
FIIG:
A19900
App. Key:
A
Cond. Code:
2
Status:
A

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  •   Certificate of Conformance
  •   Quality Inspected Parts
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