NSN 4520-01-279-1389 · NIIN 012791389 · Part number 5599990-9
Lockheed Martin Corporation Div Rotary and Mission Systems · FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 38597
Government record, cited
NSN 4520-01-279-1389 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-279-1389. Manufacturer of record part number: 5599990-9.
Also searched as4520-01-279-1389 ·
4520012791389 ·
NIIN 012791389 ·
01-279-1389 ·
FSC 4520 Space and Water Heating Equipment · CAGE 38597 · 5599990-9
Manufacturer of record: Lockheed Martin Corporation Div Rotary and Mission Systems
Identification
NSN: 4520-01-279-1389
NIIN: 012791389
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
Primary part number: 5599990-9
Manufacturer: Lockheed Martin Corporation Div Rotary and Mission Systems
General Description
The Pipe,air Conditioning-Heating, cataloged under National Stock Number 4520-01-279-1389, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Pipe,air Conditioning-Heating
FSC / FSG
4520 — Space and Water Heating Equipment (FSG 45)
Manufacturers
Lockheed Martin Corporation Div Rotary and Mission Systems (CAGE 38597)
Technical Specifications
Parameter
Value
NSN
4520-01-279-1389
Primary Part Number
5599990-9
Item Name
Pipe,air Conditioning-Heating
FSC / FSG
4520 / 45 — Space and Water Heating Equipment
Manufacturer
Lockheed Martin Corporation Div Rotary and Mission Systems
Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
Reference documents
Reference
Meaning
5599990-9
C/1Advisory reference — outside the item-of-supply concept
Naval Sea Systems Command
No interchangeability data on file.
Other items in FSC 4520 — Space and Water Heating Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4520-00-000-0098
HEATING ELEMENT,ELECTRICAL,NONIM
4520-00-000-0099
4520-00-000-0099 · Item name not on file
4520-00-001-1240
4520-00-001-1240 · Item name not on file
4520-00-001-3518
HEATING ELEMENT,ELECTRICAL,NONIM
4520-00-001-3519
HEATING ELEMENT,ELECTRICAL,IMMER
4520-00-001-6052
HEATING ELEMENT,ELECTRICAL,NONIM
4520-00-001-6298
HEATING ELEMENT,ELECTRICAL,NONIM
4520-00-001-7726
HEATER,DUCT TYPE,PORTABLE
Frequently Asked Questions
What is NSN 4520-01-279-1389?
NSN 4520-01-279-1389 is a Pipe,air Conditioning-Heating, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
What part numbers are listed for NSN 4520-01-279-1389?
NSN 4520-01-279-1389 has 1 manufacturer part number on file: 5599990-9 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Is NSN 4520-01-279-1389 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.