PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26373Damper,flue

Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating · NSN 4520-01-417-9522 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-417-9522 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-417-9522. Primary manufacturer part number: 26373.
Features
  • Damper,flue — FSC 4520
  • Shape: RECTANGULAR
  • Material: STEEL CORROSION RESISTING
  • Operation Method: AUTOMATIC
  • Mounting Method: HINGE
  • 4 verified cross-references
  • Primary manufacturer: Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Damper,flue, cataloged under National Stock Number 4520-01-417-9522, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-417-9522
Primary Part Number26373
Item NameDamper,flue
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerMestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating
StatusACTIVE
ShapeRECTANGULAR
MaterialSTEEL CORROSION RESISTING
Operation MethodAUTOMATIC
Mounting MethodHINGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4820-00-153-88362637-3 INTERCHANGEABLE
Valve,check
Hawker Pacific Aerospace Landing Gear and Components Mfg and Repair
5340-00-217-110526373 INTERCHANGEABLE
Clamp,loop
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
2530-00-970-3444 INTERCHANGEABLE
Brake Booster Assembly,master Cy
2805-01-186-876526373 INTERCHANGEABLE
Cylinder Sleeve
Moog Inc. Dba Ampac-Isp Corp
5365-01-332-706326-373 INTERCHANGEABLE
Spacer,ring
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
8010-01-674-3841B80AW653 INTERCHANGEABLE
Epoxy Coating Kit
The Sherwin-Williams Company
Cross-Reference Index
Part NumberManufacturer
26373 Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating (USA)
P-2341 MOD. 26373 Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating (USA)
P-2341 MOD.26373 REVD Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating (USA)
P-2341 MOD. 263 73 REVD Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
4820-00-153-8836INTERCHANGEABLE
VALVE,CHECK
2637-3
5340-00-217-1105INTERCHANGEABLE
CLAMP,LOOP
26373
2530-00-970-3444INTERCHANGEABLE
BRAKE BOOSTER ASSEMBLY,MASTER CY
2805-01-186-8765INTERCHANGEABLE
CYLINDER SLEEVE
26373
5365-01-332-7063INTERCHANGEABLE
SPACER,RING
26-373
8010-01-674-3841INTERCHANGEABLE
EPOXY COATING KIT
B80AW653

Frequently Asked Questions

What is NSN 4520-01-417-9522?

NSN 4520-01-417-9522 is a Damper,flue, manufactured by Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-417-9522?

NSN 4520-01-417-9522 has 4 cross-referenced part numbers: 26373 (Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating), P-2341 MOD. 26373 (Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating), P-2341 MOD.26373 REVD (Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating), P-2341 MOD. 263 73 REVD (Zf Industrieantriebe Witten Gmbh).

What NSN replaces 4520-01-417-9522?

There are 6 known substitutes for 4520-01-417-9522: 4820-00-153-8836, 5340-00-217-1105, 2530-00-970-3444 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26373?

Key specifications for 26373: Overall Height: 9.250 INCHES NOMINAL IN; Shape: RECTANGULAR; Material: STEEL CORROSION RESISTING; End Item Identification: NAVY WEAPON SYSTEM CODE JP SUPPLY CLASS ADE. 8 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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