PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

657868-1Heater Assembly

Raytheon Company Dba Raytheon · NSN 1420-01-179-8327 · FSC 1420 · No Item Name Available
Verified by PartsTable
NSN 1420-01-179-8327 — this item is cataloged by the U.S. Government under National Stock Number 1420-01-179-8327. Primary manufacturer part number: 657868-1.
Features
  • Heater Assembly — FSC 1420
  • Functional Description: HEATER FOR CRYOENGINE 1420011524363
  • General Characteristics Item Description: MATL 0.0005 SHEET,NICKEL-CHROMIUM IRON ALLOY PER MIL-N-6840 CONDITION A; 6.275 IN. LONG; 0.60 IN. MIN AND 0.61 IN. MAX WIDE; 0.07 IN. MIN AND 0.08 IN. MAX DEEP; INCLUDES CONNECTOR PART NUMBER PA60278-4 IN
  • 4 verified cross-references
  • Primary manufacturer: Raytheon Company Dba Raytheon
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater Assembly, cataloged under National Stock Number 1420-01-179-8327, is classified within Federal Supply Class 1420 (No Item Name Available) of the Guided Missiles group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1420-01-179-8327
Primary Part Number657868-1
Item NameHeater Assembly
FSC / FSG1420 / 14 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Functional DescriptionHEATER FOR CRYOENGINE 1420011524363
General Characteristics Item DescriptionMATL 0.0005 SHEET,NICKEL-CHROMIUM IRON ALLOY PER MIL-N-6840 CONDITION A; 6.275 IN. LONG; 0.60 IN. MIN AND 0.61 IN. MAX WIDE; 0.07 IN. MIN AND 0.08 IN. MAX DEEP; INCLUDES CONNECTOR PART NUMBER PA60278-4 IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1680-00-091-24041119-1 INTERCHANGEABLE
Bellows
Precision Metal Products, Inc
5330-00-297-452011191 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
4820-00-403-5641N11191 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4330-00-420-7557BT-839 W/G-401 INTERCHANGEABLE
Filter Element,fluid
Baldwin Filters
6105-00-813-9224035463 INTERCHANGEABLE
Motor,alternating Current
Rotron Incorporated
5950-00-864-768811191 INTERCHANGEABLE
Transformer,power Autotransforme
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
4730-01-004-83461537 INTERCHANGEABLE
Adapter,straight,pipe to Hose
Danfoss Power Solutions II, Llc
5340-01-193-9571NH1010750-10 INTERCHANGEABLE
Clamp,loop
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
6240-01-295-515911191 INTERCHANGEABLE
Lamp,incandescent
Pmc/beta Ltd Partnership
4730-01-312-51131119-1 INTERCHANGEABLE
Restrictor,fluid Flow
R & D Machine Rafael Anaya Div Defense Logistics Agency
Cross-Reference Index
Part NumberManufacturer
657868-1 PRIMARY Raytheon Company Dba Raytheon (USA)
657868-1 82577 Raytheon Company Dba Raytheon (USA)
11191 PRIMARY Technical Heaters, Inc. Dba Technical Heaters Inc (USA)
17-3611 PRIMARY Tayco Engineering, Inc. Dba Tayco Engineering (USA)
Related Parts
1680-00-091-2404INTERCHANGEABLE
BELLOWS
1119-1
5330-00-297-4520INTERCHANGEABLE
SEAL,PLAIN ENCASED
11191
4820-00-403-5641INTERCHANGEABLE
DISK,VALVE
N11191
4330-00-420-7557INTERCHANGEABLE
FILTER ELEMENT,FLUID
BT-839 W/G-401
6105-00-813-9224INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
035463
5950-00-864-7688INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
11191
4730-01-004-8346INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
1537
5340-01-193-9571INTERCHANGEABLE
CLAMP,LOOP
NH1010750-10
6240-01-295-5159INTERCHANGEABLE
LAMP,INCANDESCENT
11191
4730-01-312-5113INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
1119-1
5310-01-519-8103INTERCHANGEABLE
WASHER,BEVEL
11-191
4240-01-572-3104INTERCHANGEABLE
LENS,GOGGLES,INDUSTRIAL
11-191

Frequently Asked Questions

What is NSN 1420-01-179-8327?

NSN 1420-01-179-8327 is a Heater Assembly, manufactured by Raytheon Company Dba Raytheon, classified under FSC 1420 (No Item Name Available). Status: active.

What are the part numbers for NSN 1420-01-179-8327?

NSN 1420-01-179-8327 has 4 cross-referenced part numbers: 657868-1 (Raytheon Company Dba Raytheon), 657868-1 82577 (Raytheon Company Dba Raytheon), 11191 (Technical Heaters, Inc. Dba Technical Heaters Inc), 17-3611 (Tayco Engineering, Inc. Dba Tayco Engineering).

What NSN replaces 1420-01-179-8327?

There are 12 known substitutes for 1420-01-179-8327: 1680-00-091-2404, 5330-00-297-4520, 4820-00-403-5641 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 657868-1?

Key specifications for 657868-1: Functional Description: HEATER FOR CRYOENGINE 1420011524363; General Characteristics Item Description: MATL 0.0005 SHEET,NICKEL-CHROMIUM IRON ALLOY PER MIL-N-6840 CONDITION A; 6.275 IN. LONG; 0.60 IN. MIN AND 0.61 IN. MAX WIDE; 0.07 IN. MIN AND 0.08 IN. MAX DEEP; INCLUDES CONNECTOR PART NUMBER PA60278-4 IN; End Item Identification: AGM-65A MISSILE A. 3 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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