PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25277Pump Unit,rotary

Itw Gse Inc. · NSN 4320-01-538-9032 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-538-9032 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-538-9032. Primary manufacturer part number: 25277.
Features
  • Pump Unit,rotary — FSC 4320
  • Pump Quantity: 2
  • 2 verified cross-references
  • Primary manufacturer: Itw Gse Inc.
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,rotary, cataloged under National Stock Number 4320-01-538-9032, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Itw Gse 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-538-9032
Primary Part Number25277
Item NamePump Unit,rotary
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerItw Gse Inc.
StatusACTIVE
Pump Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5962-00-199-3824578R823H02 INTERCHANGEABLE
Microcircuit,digital
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3510-01-143-4837 INTERCHANGEABLE
Guard,clothes
5305-01-217-212525277 INTERCHANGEABLE
Screw,cap,hexagon Head
Twg Canada Consolidated Inc
5331-01-621-073825-277 INTERCHANGEABLE
O-Ring
Hii Unmanned Systems, Inc
Cross-Reference Index
Part NumberManufacturer
25277 Itw Gse Inc. (USA)
25277 Gse Holdings Inc. Dba Itw Military Gse Div Hobart Ground Systems (USA)
Related Parts
5962-00-199-3824INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
578R823H02
3510-01-143-4837INTERCHANGEABLE
GUARD,CLOTHES
5305-01-217-2125INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
25277
5331-01-621-0738INTERCHANGEABLE
O-RING
25-277

Frequently Asked Questions

What is NSN 4320-01-538-9032?

NSN 4320-01-538-9032 is a Pump Unit,rotary, manufactured by Itw Gse Inc., classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-538-9032?

NSN 4320-01-538-9032 has 2 cross-referenced part numbers: 25277 (Itw Gse Inc.), 25277 (Gse Holdings Inc. Dba Itw Military Gse Div Hobart Ground Systems).

What NSN replaces 4320-01-538-9032?

There are 4 known substitutes for 4320-01-538-9032: 5962-00-199-3824, 3510-01-143-4837, 5305-01-217-2125 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25277?

Key specifications for 25277: End Item Identification: F-22 RAPTOR; Part Name Assigned by Controlling Agency: PUMP,TANDEM PVG100/75; Pump Quantity: 2. 3 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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