PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21216Heat E,changer

Palomar Industries Inc · NSN 3655-00-066-8077 · FSC 3655 · No Item Name Available
Verified by PartsTable
NSN 3655-00-066-8077 — this item is cataloged by the U.S. Government under National Stock Number 3655-00-066-8077. Primary manufacturer part number: 21216.
Features
  • Heat E,changer — FSC 3655
  • 1 verified cross-reference
  • Primary manufacturer: Palomar Industries Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heat E,changer, cataloged under National Stock Number 3655-00-066-8077, is classified within Federal Supply Class 3655 (No Item Name Available) of the Special Industry Machinery group. The primary manufacturer of record is Palomar Industries Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameHeat E,changer
FSC / FSG3655 — No Item Name Available (FSG 36)
ManufacturersPalomar Industries Inc (CAGE 12938)
Technical Specifications
ParameterValue
NSN3655-00-066-8077
Primary Part Number21216
Item NameHeat E,changer
FSC / FSG3655 / 36 — No Item Name Available
ManufacturerPalomar Industries Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5306-00-167-357521216 INTERCHANGEABLE
Bolt,eye
Northrop Grumman Systems Corporation
5330-00-218-23112-209AX2029B INTERCHANGEABLE
Gasket Set
Industrial Technologies and Services Llc
2910-00-424-336521216 INTERCHANGEABLE
Venturi,carburetor
Briggs and Stratton Corp
5330-00-580-852911907 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5930-00-614-5284 INTERCHANGEABLE
Switch,toggle
6605-00-952-4497312ST INTERCHANGEABLE
Standard Weight Too
Troemner Llc
4720-01-246-804021216 INTERCHANGEABLE
Hose,preformed
Gates Corporation
9340-01-290-93582-12-16 INTERCHANGEABLE
Tubing,glass
Fulton Boiler Works Inc
4820-01-412-522121216-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-476-372721216-1001-1 INTERCHANGEABLE
Piston,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21216 Palomar Industries Inc (USA)
Related Parts
5306-00-167-3575INTERCHANGEABLE
BOLT,EYE
21216
5330-00-218-2311INTERCHANGEABLE
GASKET SET
2-209AX2029B
2910-00-424-3365INTERCHANGEABLE
VENTURI,CARBURETOR
21216
5330-00-580-8529INTERCHANGEABLE
SEAL,PLAIN ENCASED
11907
5930-00-614-5284INTERCHANGEABLE
SWITCH,TOGGLE
6605-00-952-4497INTERCHANGEABLE
STANDARD WEIGHT TOO
312ST
4720-01-246-8040INTERCHANGEABLE
HOSE,PREFORMED
21216
9340-01-290-9358INTERCHANGEABLE
TUBING,GLASS
2-12-16
4820-01-412-5221INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21216-001
4820-01-476-3727INTERCHANGEABLE
PISTON,VALVE
21216-1001-1
4730-01-500-9677INTERCHANGEABLE
RESTRICTOR UNIT,FLUID FLOW
JEDA1875160D
5935-01-543-4216INTERCHANGEABLE
ADAPTER,CONNECTOR
21216

Frequently Asked Questions

What is NSN 3655-00-066-8077?

NSN 3655-00-066-8077 is a Heat E,changer, manufactured by Palomar Industries Inc, classified under FSC 3655 (No Item Name Available). Status: active.

What are the part numbers for NSN 3655-00-066-8077?

NSN 3655-00-066-8077 has 1 cross-referenced part number: 21216 (Palomar Industries Inc).

What NSN replaces 3655-00-066-8077?

There are 12 known substitutes for 3655-00-066-8077: 5306-00-167-3575, 5330-00-218-2311, 2910-00-424-3365 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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