7657-4

View detailed technical data, stock status, and sourcing information for: 7657-4
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Federal Supply Group

Pumps and Compressors

Federal Supply Classification

4320 Power and Hand Pumps

National Stock Number

4320-00-911-6595

Item Name Code

10089

Assigment Date

01/01/1960 (66 years ago)

A replaceable device designed to remove solid particles from fluids ranging in density from heavy liquids to gases. The removal of particles is accomplished by porous material (metallic or non-metallic), stacked disks, wound wire, or the like, constructed so the fluid can flow through the device while the solid particles are retained. It may be designed to fit into a filter, fluid (or similar cavity), or it may have an integral outer casing and mounting facilities and be designed to connect directly to an engine, compressor, or the like. The degree of removal of particles must be nominally rated at less than 50 microns or absolutely rated at less than 75 microns. Excludes:filter element, air conditioning. See also strainer element, sediment.

0.105 inches nominal keyway depth, 2.312 inches nominal overall width, 1 keyway quantity, 0.188 inches nominal keyway width, 5.500 inches nominal overall diameter

Product Characteristics

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

Overall Width: 2.312 inches nominal
Keyway Width: 0.188 inches nominal
Keyway Depth: 0.105 inches nominal
Overall Diameter: 5.500 inches nominal
Keyway Quantity: 1
Keyway Length: 0.938 inches nominal
Blade Quantity: 6
Hub Length: 0.938 inches nominal
Blade Type: backward curve
Design Type: single width
Mounting Method: key
Rotation Direction For Which Designed: clockwise
Hub Bore Diameter: 0.750 inches minimum and 0.751 inches maximum
Hub Location: single inside offset
Hub Quantity: 1
Hub Projection Length Beyond Wheel Side: 0.875 inches nominal
Keyway Type: straight
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
7657-004	Centrifugal Pump Impeller
7657-009	Centrifugal Pump Impeller
7657-4	Centrifugal Pump Impeller

FAQs

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

What is the FSCG of the NSN 4320-00-911-6595?

The FSCG of the NSN 4320-00-911-6595 is 4320

Does the NSN 4320-00-911-6595 have a Schedule B code assigned?

Yes, the Schedule B code is 8413919520

Does NSN 4320-00-911-6595 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 4320-00-911-6595 contain precious materials?

Precious metal content is unknown

Does NSN 4320-00-911-6595 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 4320-00-911-6595 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960