PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T991(LN)Pump Unit,axial Pistons

General Pump Inc · NSN 4320-01-426-7437 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-426-7437 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-426-7437. Primary manufacturer part number: T991(LN).
Features
  • Pump Unit,axial Pistons — FSC 4320
  • 3 verified cross-references
  • Primary manufacturer: General Pump Inc
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,axial Pistons, cataloged under National Stock Number 4320-01-426-7437, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is General Pump Inc. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-426-7437
Primary Part NumberT991(LN)
Item NamePump Unit,axial Pistons
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerGeneral Pump Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5980-00-148-8172MV5353 INTERCHANGEABLE
Light Emitting Diode
Quality Technologies Corp
5905-00-197-39472100-2867 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Keysight Technologies Inc
5945-00-231-1850SK5018 INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation
4730-00-241-831156-3-4SFT INTERCHANGEABLE
Coupling Half,quick Disconnect
Dixon Valve & Coupling Company, Llc
3120-00-343-237014U1479PCDD5353 INTERCHANGEABLE
Bearing,sleeve
Naval Ship Systems Command
9340-00-530-42475353 INTERCHANGEABLE
Window,observation
Clayton Manufacturing Company
4730-00-602-3707233410N INTERCHANGEABLE
Plug,pipe
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5340-00-759-27141725022-101 INTERCHANGEABLE
Clip,spring Tension
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5950-00-782-73145353 INTERCHANGEABLE
Transformer,power
William Spencer
5975-00-904-62225353 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
Cross-Reference Index
Part NumberManufacturer
T991(LN) PRIMARY General Pump Inc (USA)
5353 Clarke Industries (USA)
197305 Clarke Industries (USA)
Related Parts
5980-00-148-8172INTERCHANGEABLE
LIGHT EMITTING DIODE
MV5353
5905-00-197-3947INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
2100-2867
5945-00-231-1850INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
SK5018
4730-00-241-8311INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
56-3-4SFT
3120-00-343-2370INTERCHANGEABLE
BEARING,SLEEVE
14U1479PCDD5353
9340-00-530-4247INTERCHANGEABLE
WINDOW,OBSERVATION
5353
4730-00-602-3707INTERCHANGEABLE
PLUG,PIPE
233410N
5340-00-759-2714INTERCHANGEABLE
CLIP,SPRING TENSION
1725022-101
5950-00-782-7314INTERCHANGEABLE
TRANSFORMER,POWER
5353
5975-00-904-6222INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5353
5930-01-146-0395INTERCHANGEABLE
SWITCH,CODE INDICATING WHEEL
L507001891
5975-01-648-2475INTERCHANGEABLE
CONDUIT ASSEMBLY,METAL,FLEXIBLE
5353

Frequently Asked Questions

What is NSN 4320-01-426-7437?

NSN 4320-01-426-7437 is a Pump Unit,axial Pistons, manufactured by General Pump Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-426-7437?

NSN 4320-01-426-7437 has 3 cross-referenced part numbers: T991(LN) (General Pump Inc), 5353 (Clarke Industries), 197305 (Clarke Industries).

What NSN replaces 4320-01-426-7437?

There are 12 known substitutes for 4320-01-426-7437: 5980-00-148-8172, 5905-00-197-3947, 5945-00-231-1850 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T991(LN)?

Key specifications for T991(LN): End Item Identification: PREPROVISIONING SUPPORT NAVICP IS POE. 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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