Z123

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Federal Supply Group

Pumps and Compressors

Federal Supply Classification

4320 Power and Hand Pumps

National Stock Number

4320-00-897-7042

Item Name Code

10255

Assigment Date

01/01/1962 (64 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.

2b thread class, 2.750 inches nominal outside diameter, 0.203 inches nominal bolt circle diameter, 1.876 inches nominal inside diameter, right-hand thread direction

Product Characteristics

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

Thread Class: 2b
Thread Direction: right-hand
Inside Diameter: 1.876 inches nominal
Bolt Circle Diameter: 0.203 inches nominal
Outside Diameter: 2.750 inches nominal
Material Thickness: 0.500 inches nominal
Mounting Hole Quantity: 2
Mounting Hole Type: threaded
Material: iron cast
Style Designator: round
Thread Size And Series/Type Designator: 0.250-20 unc

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
R800PC34	Dirt and Liquid Deflector
Z123	Dirt and Liquid Deflector

FAQs

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

What is the FSCG of the NSN 4320-00-897-7042?

The FSCG of the NSN 4320-00-897-7042 is 4320

Does the NSN 4320-00-897-7042 have a Schedule B code assigned?

Yes, the Schedule B code is 8413919520

Does NSN 4320-00-897-7042 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 4320-00-897-7042 contain precious materials?

Precious metal content is unknown

Does NSN 4320-00-897-7042 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 4320-00-897-7042 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962