PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

44516Shaft,transmission,pump

Cat Pumps Corp · NSN 4320-01-649-3980 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-649-3980 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-649-3980. Primary manufacturer part number: 44516.
Features
  • Shaft,transmission,pump — FSC 4320
  • Pump Model Number for Which Designed: 3535
  • Shaft Largest Diameter: 1.378 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Cat Pumps Corp
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Shaft,transmission,pump, cataloged under National Stock Number 4320-01-649-3980, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Cat Pumps Corp. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-649-3980
Primary Part Number44516
Item NameShaft,transmission,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCat Pumps Corp
StatusACTIVE
Pump Model Number for Which Designed3535
Shaft Largest Diameter1.378 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2530-00-383-9989642967 INTERCHANGEABLE
Brake Shoe Set
Am General Llc
5315-00-733-5168 INTERCHANGEABLE
Key,carbon Packing
5930-01-254-2150GS837GW13 INTERCHANGEABLE
Switch,push
Northrop Grumman Systems Corporation
4820-01-282-5088 INTERCHANGEABLE
Seat,valve
5120-01-398-9304 INTERCHANGEABLE
Wrench,open End
5310-01-659-484412600923 INTERCHANGEABLE
Washer,flat
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
44516 PRIMARY Cat Pumps Corp (USA)
Related Parts
2530-00-383-9989INTERCHANGEABLE
BRAKE SHOE SET
642967
5315-00-733-5168INTERCHANGEABLE
KEY,CARBON PACKING
5930-01-254-2150INTERCHANGEABLE
SWITCH,PUSH
GS837GW13
4820-01-282-5088INTERCHANGEABLE
SEAT,VALVE
5120-01-398-9304INTERCHANGEABLE
WRENCH,OPEN END
5310-01-659-4844INTERCHANGEABLE
WASHER,FLAT
12600923

Frequently Asked Questions

What is NSN 4320-01-649-3980?

NSN 4320-01-649-3980 is a Shaft,transmission,pump, manufactured by Cat Pumps Corp, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-649-3980?

NSN 4320-01-649-3980 has 1 cross-referenced part number: 44516 (Cat Pumps Corp).

What NSN replaces 4320-01-649-3980?

There are 6 known substitutes for 4320-01-649-3980: 2530-00-383-9989, 5315-00-733-5168, 5930-01-254-2150 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 44516?

Key specifications for 44516: Pump Model Number for Which Designed: 3535; Shaft Largest Diameter: 1.378 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: SHAFT, PROTECTOR; Special Features: FITS ON PLUMGER PUMPS, 3545/3560/35FR/38FR. 4 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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