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Wearing Ring NSN 4320-00-075-1951

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 4320-00-075-1951 NSN: 4320-00-075-1951

Features and Characteristics

Body Style
External locking flange
Chamfer Length
0.031 inches outside right corner
Groove Depth
0.051 inches
Groove Width
Between 0.085 inches and 0.090 inches
Overall Length
1.062 inches
Body Outside Diameter
4.999 inches
Body Inside Diameter
4.684 inches
End To Flange Distance
0.312 inches
Center Flange Thickness
Between 0.242 inches and 0.245 inches
Smallest External Anchor Flange Radius
2.438 inches
Largest External Anchor Flange Radius
2.625 inches
Distance Below Centerline
0.094 inches
Corner Shape
Square inside left corner
Surface Finish
125.0 microinches all surfaces
Chamfer Angle
45.0 degrees outside right corner
Special Features
0.375 in. W, 0.051 in. Dp groove opposite side of locking flange
Material
Steel
FSC
4320 Power And Hand Pumps
NIIN
000751951
NSN
4320000751951

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
H4320-075-1951
Cage Code:
03950
Status:
A
MSDS:
Part Number:
A-2 1/2NC180B-1
Cage Code:
10941
Status:
A
MSDS:
Part Number:
A2 1-2NC180A1US305
Cage Code:
10941
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 4320-00-075-1951
What are the manufacturers of nsn 4320000751951?
Does this nsn 4320000751951 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4320000751951
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 4320000751951 contain any precious metals?
Precious metal content is unknown.
Does nsn 4320000751951 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4320000751951?
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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