PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21068Damper,flue

Gaylord Marine Services, Inc. · NSN 4520-01-660-5235 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-660-5235 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-660-5235. Primary manufacturer part number: 21068.
Features
  • Damper,flue — FSC 4520
  • 1 verified cross-reference
  • Primary manufacturer: Gaylord Marine Services, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Damper,flue, cataloged under National Stock Number 4520-01-660-5235, 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 Gaylord Marine Services, Inc.. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-660-5235
Primary Part Number21068
Item NameDamper,flue
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerGaylord Marine Services, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5365-00-145-135021068AS INTERCHANGEABLE
Shim Set
Brinkley Technology Group Llc Dba Hercules Manufacturing
5940-00-194-4206142-6-3 INTERCHANGEABLE
Terminal,lug
Kearfott Corporation Div Guidance and Navigation Division
5895-00-283-435421068-00 INTERCHANGEABLE
Recorder-Reproducer Set,signal D
L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West
5905-00-295-3961 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
3020-00-554-7920210068 PC 9 INTERCHANGEABLE
Gear,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5998-00-563-0270 INTERCHANGEABLE
Circuit Card Assembly
3110-00-863-119421068 INTERCHANGEABLE
Bearing,roller,cylindrical
Fag Bearings Corporation
2520-01-413-189905714226 INTERCHANGEABLE
Gear Assembly,transfer Case
Am General Llc
4820-01-419-255621068-001 INTERCHANGEABLE
Valve,shuttle
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
5930-01-518-975821068 INTERCHANGEABLE
Switch,rotary
G.s. Blodgett, Llc Div Blodgett
Cross-Reference Index
Part NumberManufacturer
21068 PRIMARY Gaylord Marine Services, Inc. (USA)
Related Parts
5365-00-145-1350INTERCHANGEABLE
SHIM SET
21068AS
5940-00-194-4206INTERCHANGEABLE
TERMINAL,LUG
142-6-3
5895-00-283-4354INTERCHANGEABLE
RECORDER-REPRODUCER SET,SIGNAL D
21068-00
5905-00-295-3961INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
3020-00-554-7920INTERCHANGEABLE
GEAR,SPUR
210068 PC 9
5998-00-563-0270INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
3110-00-863-1194INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
21068
2520-01-413-1899INTERCHANGEABLE
GEAR ASSEMBLY,TRANSFER CASE
05714226
4820-01-419-2556INTERCHANGEABLE
VALVE,SHUTTLE
21068-001
5930-01-518-9758INTERCHANGEABLE
SWITCH,ROTARY
21068
4820-01-532-8877INTERCHANGEABLE
PISTON,VALVE
21068-1005-1

Frequently Asked Questions

What is NSN 4520-01-660-5235?

NSN 4520-01-660-5235 is a Damper,flue, manufactured by Gaylord Marine Services, Inc., classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-660-5235?

NSN 4520-01-660-5235 has 1 cross-referenced part number: 21068 (Gaylord Marine Services, Inc.).

What NSN replaces 4520-01-660-5235?

There are 11 known substitutes for 4520-01-660-5235: 5365-00-145-1350, 5940-00-194-4206, 5895-00-283-4354 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21068?

Key specifications for 21068: Part Name Assigned by Controlling Agency: COMPLETE NM-03-24-DS-RIGHT DAMPER CONTROL; End Item Identification: DAMPER CONTROL. 2 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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