4320-00-738-1728

Find complete technical information, availability, and procurement data for: 4320-00-738-1728
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Federal Supply Group

Pumps and Compressors

Federal Supply Classification

4320 Power and Hand Pumps

National Stock Number

4320-00-738-1728

Item Name Code

22534

Assigment Date

01/01/1963 (63 years ago)

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.

4.235 inches nominal body inside diameter, internal flange w/external locking flange body style, 4.748 inches nominal body outside diameter, 0.375 inches nominal inside right corner corner radius, 0.938 inches nominal overall length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: internal flange w/external locking flange
Overall Length: 0.938 inches nominal
Body Outside Diameter: 4.748 inches nominal
Body Inside Diameter: 4.235 inches nominal
Corner Radius: 0.375 inches nominal inside right corner
Left Side Flange Thickness: 0.312 inches nominal
Right Side Flange Thickness: 0.188 inches nominal
Distance Between Flanges: 0.435 inches nominal
End To Flange Distance: 0.625 inches nominal
Internal Flange Inside Diameter: 3.250 inches nominal
Internal Flange Outside Diameter: 0.188 inches nominal
Internal Flange Lip Width: 0.188 inches nominal
Smallest External Anchor Flange Radius: 2.281 inches nominal
Largest External Anchor Flange Radius: 2.562 inches nominal
Distance Below Centerline: 0.188 inches nominal
Distance From End: 0.312 inches nominal
Corner Shape: round inside right corner
Corner Shape: square outside left corner
Corner Shape: square inside left corner
Corner Shape: square outside right corner
Material: steel

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
C204A	Wearing Ring
CS4320-0175	Wearing Ring
R780PC5	Wearing Ring

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4320-00-738-1728?

The FSCG of the NSN 4320-00-738-1728 is 4320

Does the NSN 4320-00-738-1728 have a Schedule B code assigned?

Yes, the Schedule B code is 8413919520

Does NSN 4320-00-738-1728 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4320-00-738-1728 contain precious materials?

Precious metal content is unknown

Does NSN 4320-00-738-1728 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4320-00-738-1728 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963