PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51321-1Fuel,pump,oil Heater

Hdt Expeditionary Systems Inc · NSN 4320-00-792-2082 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-792-2082 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-792-2082. Primary manufacturer part number: MS51321-1.
Features
  • Fuel,pump,oil Heater — FSC 4320
  • General Characteristics Item Description: 2 IN. OD,5 9/32 IN. O/A LG IN
  • 4 verified cross-references
  • Primary manufacturer: Hdt Expeditionary Systems Inc
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Fuel,pump,oil Heater, cataloged under National Stock Number 4320-00-792-2082, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Hdt Expeditionary Systems Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-792-2082
Primary Part NumberMS51321-1
Item NameFuel,pump,oil Heater
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerHdt Expeditionary Systems Inc
StatusACTIVE
General Characteristics Item Description2 IN. OD,5 9/32 IN. O/A LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-115-613542A40908A02 INTERCHANGEABLE
Rubber Round Section
General Dynamics Mission Systems, Inc. Dba Gdms
5350-00-240-221347.422 INTERCHANGEABLE
Rouge,abrasive
Grobet File Co of America Inc Dba Grobet Usa
6130-00-382-77356204-923629PC369 INTERCHANGEABLE
Rectifier,metallic
Naval Ship Systems Command
2640-00-555-2840 INTERCHANGEABLE
Valve,pneumatic Tire
5996-01-543-06631042457-3 INTERCHANGEABLE
Amplifier,radio Frequency
Raytheon Company Dba Raytheon Co
Cross-Reference Index
Part NumberManufacturer
10424573 Nimikkeistokeskus Ncb Finland (FIN)
MS51321-1 PRIMARY Hdt Expeditionary Systems Inc (USA)
4320PL2171520 Jednolity Indeks Materialowy - Uniform Material Index (POL)
47422 Hdt Expeditionary Systems Inc (USA)
Related Parts
5330-00-115-6135INTERCHANGEABLE
RUBBER ROUND SECTION
42A40908A02
5350-00-240-2213INTERCHANGEABLE
ROUGE,ABRASIVE
47.422
6130-00-382-7735INTERCHANGEABLE
RECTIFIER,METALLIC
6204-923629PC369
2640-00-555-2840INTERCHANGEABLE
VALVE,PNEUMATIC TIRE
5996-01-543-0663INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
1042457-3

Frequently Asked Questions

What is NSN 4320-00-792-2082?

NSN 4320-00-792-2082 is a Fuel,pump,oil Heater, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-792-2082?

NSN 4320-00-792-2082 has 4 cross-referenced part numbers: 10424573 (Nimikkeistokeskus Ncb Finland), MS51321-1 (Hdt Expeditionary Systems Inc), 4320PL2171520 (Jednolity Indeks Materialowy - Uniform Material Index), 47422 (Hdt Expeditionary Systems Inc).

What NSN replaces 4320-00-792-2082?

There are 5 known substitutes for 4320-00-792-2082: 5330-00-115-6135, 5350-00-240-2213, 6130-00-382-7735 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51321-1?

Key specifications for MS51321-1: General Characteristics Item Description: 2 IN. OD,5 9/32 IN. O/A LG 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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