PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

99121661Pump,rotary

Alfa Laval Inc · NSN 4320-00-163-1071 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-163-1071 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-163-1071. Primary manufacturer part number: 99121661.
Features
  • Pump,rotary — FSC 4320
  • Operation Method: POWERED
  • Drive Shaft End Diameter: 0.688 INCHES NOMINAL IN
  • Rotary Pump Design: GEAR
  • Drive Shaft End Diameter: 0.688 INCHES NOMINAL IN
  • Drive Shaft Type: PLAIN ROUND
  • Rotary Pump Design: GEAR
  • Drive Shaft Length: 1.688 INCHES NOMINAL IN
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump,rotary, cataloged under National Stock Number 4320-00-163-1071, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Alfa Laval Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-163-1071
Primary Part Number99121661
Item NamePump,rotary
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerAlfa Laval Inc
StatusACTIVE
Operation MethodPOWERED
Drive Shaft End Diameter0.688 INCHES NOMINAL IN
Rotary Pump DesignGEAR
Drive Shaft End Diameter0.688 INCHES NOMINAL IN
Drive Shaft TypePLAIN ROUND
Rotary Pump DesignGEAR
Drive Shaft Length1.688 INCHES NOMINAL IN
Drive Shaft TypePLAIN ROUND
Pump Rotation DirectionCLOCKWISE AND COUNTERCLOCKWISE
Drive Shaft Length1.688 INCHES NOMINAL IN
Pump Rotation DirectionCLOCKWISE AND COUNTERCLOCKWISE
Discharge Connection TypeOVAL FLANGE
Pumping Element Operating PositionVERTICAL
Discharge Connection Quantity1
Intake Connection TypeOVAL FLANGE
Drive Connection TypeRIGID COUPLED
Intake Connection Quantity1
Operation MethodPOWERED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6130-00-092-5625 INTERCHANGEABLE
Power Supply
4720-00-447-353821661 INTERCHANGEABLE
Hose Assembly,nonmetallic
Dressta North America Ltd
6610-00-544-555121661 INTERCHANGEABLE
Cover,plug
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
5999-00-920-3734 INTERCHANGEABLE
Mounting Pad,electrical-Electron
1440-00-956-53802166-1 INTERCHANGEABLE
Cable Drum Assembly
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
5330-01-117-408021661 INTERCHANGEABLE
Gasket
Forenta Lp
5305-01-188-049021661 INTERCHANGEABLE
Screw,assy. Vent
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5360-01-196-401821661 INTERCHANGEABLE
Spring,helical,extension
Barnes Group Inc. Dba Barnes Distribution
5340-01-330-560221661 INTERCHANGEABLE
Seat,helical Compression Spring
Parker Hannifin Corporation Div Hydraulic Systems Division
6625-01-434-688221661 INTERCHANGEABLE
Ammeter
Simpson Electric Company, Inc.
Cross-Reference Index
Part NumberManufacturer
21661 Alfa Laval Inc (USA)
99121661 PRIMARY Alfa Laval Inc (USA)
Related Parts
6130-00-092-5625INTERCHANGEABLE
POWER SUPPLY
4720-00-447-3538INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
21661
6610-00-544-5551INTERCHANGEABLE
COVER,PLUG
21661
5999-00-920-3734INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
1440-00-956-5380INTERCHANGEABLE
CABLE DRUM ASSEMBLY
2166-1
5330-01-117-4080INTERCHANGEABLE
GASKET
21661
5305-01-188-0490INTERCHANGEABLE
SCREW,ASSY. VENT
21661
5360-01-196-4018INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
21661
5340-01-330-5602INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
21661
6625-01-434-6882INTERCHANGEABLE
AMMETER
21661

Frequently Asked Questions

What is NSN 4320-00-163-1071?

NSN 4320-00-163-1071 is a Pump,rotary, manufactured by Alfa Laval Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-163-1071?

NSN 4320-00-163-1071 has 2 cross-referenced part numbers: 21661 (Alfa Laval Inc), 99121661 (Alfa Laval Inc).

What NSN replaces 4320-00-163-1071?

There are 10 known substitutes for 4320-00-163-1071: 6130-00-092-5625, 4720-00-447-3538, 6610-00-544-5551 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 99121661?

Key specifications for 99121661: Operation Method: POWERED; Drive Shaft End Diameter: 0.688 INCHES NOMINAL IN; Rotary Pump Design: GEAR; Drive Shaft End Diameter: 0.688 INCHES NOMINAL IN. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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