PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M326Pump Unit,rotary

Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids · NSN 4320-00-537-0841 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-537-0841 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-537-0841. Primary manufacturer part number: M326.
Features
  • Pump Unit,rotary — FSC 4320
  • Pump Quantity: 1
  • Inclosure Type: PARTIALLY INCLOSED
  • Rotary Pump Design: GEAR
  • Current Type: DC
  • Intake Connection Quantity: 1
  • Discharge Connection Quantity: 1
  • Media for Which Designed: HYDROCARBON FUELS AND OILS
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,rotary, cataloged under National Stock Number 4320-00-537-0841, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids. Government technical data includes 15 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-537-0841
Primary Part NumberM326
Item NamePump Unit,rotary
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerBucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids
StatusACTIVE
Pump Quantity1
Inclosure TypePARTIALLY INCLOSED
Rotary Pump DesignGEAR
Current TypeDC
Intake Connection Quantity1
Discharge Connection Quantity1
Media for Which DesignedHYDROCARBON FUELS AND OILS
Prime Mover Quantity1
Mounting TypeBASE
Prime Mover TypeELECTRIC MOTOR
Discharge Connection TypeTHREADED INTERNAL
Prime Mover Cooling MediumAIR
Intake Connection TypeTHREADED INTERNAL
Voltage in Volts24.0
Operation Relationship DesignINDEPENDENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5305-00-577-546212378PCM326 INTERCHANGEABLE
Screw,cap,hexagon Head
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5961-00-855-3780 INTERCHANGEABLE
Semiconductor Devic
4220-01-229-4020 INTERCHANGEABLE
Gloves,divers'
Cross-Reference Index
Part NumberManufacturer
M326 PRIMARY Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids (USA)
Related Parts
5305-00-577-5462INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
12378PCM326
5961-00-855-3780INTERCHANGEABLE
SEMICONDUCTOR DEVIC
4220-01-229-4020INTERCHANGEABLE
GLOVES,DIVERS'

Frequently Asked Questions

What is NSN 4320-00-537-0841?

NSN 4320-00-537-0841 is a Pump Unit,rotary, manufactured by Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-537-0841?

NSN 4320-00-537-0841 has 1 cross-referenced part number: M326 (Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids).

What NSN replaces 4320-00-537-0841?

There are 3 known substitutes for 4320-00-537-0841: 5305-00-577-5462, 5961-00-855-3780, 4220-01-229-4020. Verify interchangeability with system specifications before substitution.

What are the specifications of M326?

Key specifications for M326: Pump Quantity: 1; Inclosure Type: PARTIALLY INCLOSED; Rotary Pump Design: GEAR; Current Type: DC. 15 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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