NSN 4520-01-239-5387 · NIIN 012395387 · Part number 7250-999 AY99G 11X7IN.
Huntington Ingalls Inc Div Newport News Shipbuilding · FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 43689
Government record, cited
NSN 4520-01-239-5387 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-239-5387. Manufacturer of record part number: 7250-999 AY99G 11X7IN..
Also searched as4520-01-239-5387 ·
4520012395387 ·
NIIN 012395387 ·
01-239-5387 ·
FSC 4520 Space and Water Heating Equipment · CAGE 43689 · 7250-999 AY99G 11X7IN.
Manufacturer of record: Huntington Ingalls Inc Div Newport News Shipbuilding
Identification
NSN: 4520-01-239-5387
NIIN: 012395387
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
Primary part number: 7250-999 AY99G 11X7IN.
Manufacturer: Huntington Ingalls Inc Div Newport News Shipbuilding
General Description
The Damper,flue, cataloged under National Stock Number 4520-01-239-5387, 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 Huntington Ingalls Inc Div Newport News Shipbuilding. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4520-01-239-5387
Primary Part Number
7250-999 AY99G 11X7IN.
Item Name
Damper,flue
FSC / FSG
4520 / 45 — Space and Water Heating Equipment
Manufacturer
Huntington Ingalls Inc Div Newport News Shipbuilding
Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
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 4520-01-239-5387?
NSN 4520-01-239-5387 is a Damper,flue, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
What part numbers are listed for NSN 4520-01-239-5387?
NSN 4520-01-239-5387 has 1 manufacturer part number on file: 7250-999 AY99G 11X7IN. (Huntington Ingalls Inc Div Newport News Shipbuilding).
What are the specifications of 7250-999 AY99G 11X7IN.?
Key specifications for 7250-999 AY99G 11X7IN.: Overall Length: 11.000 INCHES NOMINAL IN; Overall Width: 7.000 INCHES NOMINAL IN. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4520-01-239-5387 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.