PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5639Wrench,impeller

Coffin Turbo Pump Inc · NSN 4320-00-759-5539 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-759-5539 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-759-5539. Primary manufacturer part number: 5639.
Features
  • Wrench,impeller — FSC 4320
  • General Characteristics Item Description: STEEL;4.031 IN.MAJOR OD;3.250 IN.MINOR OD;3.438 IN.MAJOR ID;2.500 IN.MINOR ID;6.000 IN.O/A H;WRENCH HANDLE 10.500 IN.O/A LG;0.500 IN.OD;THE BODY OF THE WRENCH IS IN TWO PIECES AND THREADS TO GETHER W/LH THDS IN
  • 2 verified cross-references
  • Primary manufacturer: Coffin Turbo Pump Inc
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Wrench,impeller, cataloged under National Stock Number 4320-00-759-5539, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Coffin Turbo Pump Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-759-5539
Primary Part Number5639
Item NameWrench,impeller
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCoffin Turbo Pump Inc
StatusACTIVE
General Characteristics Item DescriptionSTEEL;4.031 IN.MAJOR OD;3.250 IN.MINOR OD;3.438 IN.MAJOR ID;2.500 IN.MINOR ID;6.000 IN.O/A H;WRENCH HANDLE 10.500 IN.O/A LG;0.500 IN.OD;THE BODY OF THE WRENCH IS IN TWO PIECES AND THREADS TO GETHER W/LH THDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5305-00-208-3569 INTERCHANGEABLE
Setscrew
5960-00-230-5228 INTERCHANGEABLE
Electron Tube
3040-00-277-2092 INTERCHANGEABLE
Brake Drum
2920-00-654-8141 INTERCHANGEABLE
Regulator,engine Generator
5325-00-732-06867320686 INTERCHANGEABLE
Grommet,nonmetallic
U S Army Tank Automotive Command Amsta-Im-Mm
4730-00-826-4278A8073 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Mueller Brass Co.
7640-01-107-17905639 INTERCHANGEABLE
Balance Chart
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
6625-01-134-48125-639 INTERCHANGEABLE
Ball
Bird Electronic Corporation Div Bird Electronic Corp
6515-01-559-201314951 INTERCHANGEABLE
Cord,power,continuous Positive a
Dimensions Medical Supply Group, Inc. Dba D M S G
Cross-Reference Index
Part NumberManufacturer
5639 Fmc Corp (USA)
5639 PRIMARY Coffin Turbo Pump Inc (USA)
Related Parts
5305-00-208-3569INTERCHANGEABLE
SETSCREW
5960-00-230-5228INTERCHANGEABLE
ELECTRON TUBE
3040-00-277-2092INTERCHANGEABLE
BRAKE DRUM
2920-00-654-8141INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
5325-00-732-0686INTERCHANGEABLE
GROMMET,NONMETALLIC
7320686
4730-00-826-4278INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
A8073
7640-01-107-1790INTERCHANGEABLE
BALANCE CHART
5639
6625-01-134-4812INTERCHANGEABLE
BALL
5-639
6515-01-559-2013INTERCHANGEABLE
CORD,POWER,CONTINUOUS POSITIVE A
14951

Frequently Asked Questions

What is NSN 4320-00-759-5539?

NSN 4320-00-759-5539 is a Wrench,impeller, manufactured by Coffin Turbo Pump Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-759-5539?

NSN 4320-00-759-5539 has 2 cross-referenced part numbers: 5639 (Fmc Corp), 5639 (Coffin Turbo Pump Inc).

What NSN replaces 4320-00-759-5539?

There are 9 known substitutes for 4320-00-759-5539: 5305-00-208-3569, 5960-00-230-5228, 3040-00-277-2092 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5639?

Key specifications for 5639: General Characteristics Item Description: STEEL;4.031 IN.MAJOR OD;3.250 IN.MINOR OD;3.438 IN.MAJOR ID;2.500 IN.MINOR ID;6.000 IN.O/A H;WRENCH HANDLE 10.500 IN.O/A LG;0.500 IN.OD;THE BODY OF THE WRENCH IS IN TWO PIECES AND THREADS TO GETHER W/LH THDS IN. 1 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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