NSN 4420-01-662-0690 · NIIN 016620690 · Part number N135749-7
Lockheed Martin Corporation Div Rms - Manassas · FSC 4420 — Heat Exchangers and Steam Condensers · FSG 44 — Furnace, Steam, Drying, Nuclear Reactors · CAGE 52088
Government record, cited
NSN 4420-01-662-0690 — this item is cataloged by the U.S. Government under National Stock Number 4420-01-662-0690. Manufacturer of record part number: N135749-7.
Also searched as4420-01-662-0690 ·
4420016620690 ·
NIIN 016620690 ·
01-662-0690 ·
FSC 4420 Heat Exchangers and Steam Condensers · CAGE 52088 · N135749-7
Manufacturer: Lockheed Martin Corporation Div Rms - Manassas
General Description
The Heat-Exchanger, cataloged under National Stock Number 4420-01-662-0690, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Manassas. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Lockheed Martin Corporation Div Rms - Manassas (USA)
No interchangeability data on file.
Other items in FSC 4420 — Heat Exchangers and Steam Condensers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4420-00-003-2812
CORE ASSEMBLY,FLUID HEATER,INDUS
4420-00-004-1071
4420-00-004-1071 · Item name not on file
4420-00-004-1072
4420-00-004-1072 · Item name not on file
4420-00-004-1073
4420-00-004-1073 · Item name not on file
4420-00-004-1074
4420-00-004-1074 · Item name not on file
4420-00-004-3860
COOLER,FLUID,INDUSTRIAL
4420-00-004-5260
4420-00-004-5260 · Item name not on file
4420-00-005-2335
PURGE ORIFICE ASSEMBLY
Frequently Asked Questions
What is NSN 4420-01-662-0690?
NSN 4420-01-662-0690 is a Heat-Exchanger, manufactured by Lockheed Martin Corporation Div Rms - Manassas, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
What part numbers are listed for NSN 4420-01-662-0690?
NSN 4420-01-662-0690 has 1 manufacturer part number on file: N135749-7 (Lockheed Martin Corporation Div Rms - Manassas).
What are the specifications of N135749-7?
Key specifications for N135749-7: Criticality Code Justification: FEAT; Special Features: A PART, ASSEMBLY, OR SYSTEM IDENTIFIED AS ESSENTIAL TO WEAPON SYSTEM PERFORMANCE OR OPERATION TO PRESERVE LIFE AND SAFETY OF PERSONNEL. 1 specification is documented in the U.S. Government catalog.
Is NSN 4420-01-662-0690 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.