C261A

View detailed technical data, stock status, and sourcing information for: C261A
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Federal Supply Group

Pumps and Compressors

Federal Supply Classification

4320 Power and Hand Pumps

National Stock Number

4320-00-932-7476

Item Name Code

22534

Assigment Date

02/17/1967 (59 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.

internal flange w/external locking flange body style, 8.437 inches nominal body outside diameter, 2.245 inches nominal overall length, 7.937 inches nominal body inside diameter, 0.315 inches nominal left side flange thickness

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: 2.245 inches nominal
Body Outside Diameter: 8.437 inches nominal
Body Inside Diameter: 7.937 inches nominal
Left Side Flange Thickness: 0.315 inches nominal
Right Side Flange Thickness: 0.270 inches nominal
Distance Between Flanges: 0.992 inches nominal
End To Flange Distance: 1.978 inches nominal
Internal Flange Inside Diameter: 5.947 inches nominal
Internal Flange Width: 0.724 inches nominal
Smallest External Anchor Flange Radius: 4.312 inches nominal
Largest External Anchor Flange Radius: 4.406 inches nominal
Distance Below Centerline: 0.188 inches nominal
Distance From End: 0.762 inches nominal
Corner Shape: square all corners
Material: copper alloy

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
C261A	Wearing Ring

FAQs

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

What is the FSCG of the NSN 4320-00-932-7476?

The FSCG of the NSN 4320-00-932-7476 is 4320

Does the NSN 4320-00-932-7476 have a Schedule B code assigned?

Yes, the Schedule B code is 8413919520

Does NSN 4320-00-932-7476 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 4320-00-932-7476 contain precious materials?

Precious metal content is unknown

Does NSN 4320-00-932-7476 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 4320-00-932-7476 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Fri, Feb 17, 1967