PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HEP612Pump Unit,rotary

Valk Manufacturing Company · NSN 4320-00-236-2577 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-236-2577 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-236-2577. Primary manufacturer part number: HEP612.
Features
  • Pump Unit,rotary — FSC 4320
  • Pump Quantity: 1
  • Prime Mover Cooling Medium: AIR
  • Discharge Connection Thread Size and Series/type Designator: 0.375-18 NPT
  • Current Type: DC
  • Prime Mover Quantity: 1
  • Prime Mover Type: ELECTRIC MOTOR
  • Mounting Type: BASE
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Pump Unit,rotary, cataloged under National Stock Number 4320-00-236-2577, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Valk Manufacturing Company. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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: Cancelled.

Technical Specifications
ParameterValue
NSN4320-00-236-2577
Primary Part NumberHEP612
Item NamePump Unit,rotary
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerValk Manufacturing Company
StatusCANCELLED
Pump Quantity1
Prime Mover Cooling MediumAIR
Discharge Connection Thread Size and Series/type Designator0.375-18 NPT
Current TypeDC
Prime Mover Quantity1
Prime Mover TypeELECTRIC MOTOR
Mounting TypeBASE
Pumping Element Operating PositionHORIZONTAL
Discharge Connection TypeTHREADED INTERNAL
Discharge Connection Quantity1
Media for Which DesignedHYDROCARBON FUELS AND OILS
Voltage in Volts12.0
Inclosure TypeFULLY INCLOSED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5120-00-351-8382M500 INTERCHANGEABLE
Crimping Tool,terminal,hand
Daniels Manufacturing Corporation
5961-00-811-4842 INTERCHANGEABLE
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4210-00-977-0710 INTERCHANGEABLE
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6635-01-045-3219M500 INTERCHANGEABLE
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4130-01-378-3428M500 INTERCHANGEABLE
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Zeks Air Drier Corp Sub of Kemp Co
3740-01-412-9363444 INTERCHANGEABLE
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6650-01-468-9093M-500 INTERCHANGEABLE
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7025-01-592-9012M500 INTERCHANGEABLE
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5307-01-607-0949M500 INTERCHANGEABLE
Stud,ball
Woodward Machine Corporation Dba Woodward Steering
Cross-Reference Index
Part NumberManufacturer
HEP612 PRIMARY Valk Manufacturing Company (USA)
M500-3W PRIMARY Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids (USA)
M500 Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids (USA)
Related Parts
5120-00-351-8382INTERCHANGEABLE
CRIMPING TOOL,TERMINAL,HAND
M500
5961-00-811-4842INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
4210-00-977-0710INTERCHANGEABLE
PUMP ROTARY POWER D
6635-01-045-3219INTERCHANGEABLE
TESTING MACHINE,ABRASION
M500
6635-01-130-2935INTERCHANGEABLE
MAGNETIC INSPECTION UNIT,PORTABL
M-500
4130-01-378-3428INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
M500
3740-01-412-9363INTERCHANGEABLE
INDOOR FLY CATCHER
444
6650-01-468-9093INTERCHANGEABLE
SPECTROPHOTOMETER
M-500
7025-01-592-9012INTERCHANGEABLE
MOUSE,DATA ENTRY
M500
5307-01-607-0949INTERCHANGEABLE
STUD,BALL
M500
3770-01-613-5936INTERCHANGEABLE
SET,MWD,OBEDIENCE COURSE
DTV100
7025-01-641-4026INTERCHANGEABLE
DISK DRIVE UNIT
M500

Frequently Asked Questions

What is NSN 4320-00-236-2577?

NSN 4320-00-236-2577 is a Pump Unit,rotary, manufactured by Valk Manufacturing Company, classified under FSC 4320 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4320-00-236-2577?

NSN 4320-00-236-2577 has 3 cross-referenced part numbers: HEP612 (Valk Manufacturing Company), M500-3W (Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids), M500 (Bucher Hydraulics, Inc. Div Bucher Hydraulics Grand Rapids).

What NSN replaces 4320-00-236-2577?

There are 12 known substitutes for 4320-00-236-2577: 5120-00-351-8382, 5961-00-811-4842, 4210-00-977-0710 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HEP612?

Key specifications for HEP612: Pump Quantity: 1; Prime Mover Cooling Medium: AIR; Discharge Connection Thread Size and Series/type Designator: 0.375-18 NPT; Current Type: DC. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4320-00-236-2577 still in active supply?

NSN 4320-00-236-2577 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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