PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

100820-1Head Assembly

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 3655-00-604-1641 · FSC 3655 · No Item Name Available
Verified by PartsTable
NSN 3655-00-604-1641 — this item is cataloged by the U.S. Government under National Stock Number 3655-00-604-1641. Primary manufacturer part number: 100820-1.
Features
  • Head Assembly — FSC 3655
  • Reference Number Differentiating Characteristics: SELECTED AND TESTED FOR USE ON ELECTROLYTIC OXYGEN-NITROGEN GENERATOR
  • 3 verified cross-references
  • Primary manufacturer: L3harris Technologies, Inc Div Space & Airborne Systems
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Head Assembly, cataloged under National Stock Number 3655-00-604-1641, is classified within Federal Supply Class 3655 (No Item Name Available) of the Special Industry Machinery group. The primary manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3655-00-604-1641
Primary Part Number100820-1
Item NameHead Assembly
FSC / FSG3655 / 36 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Reference Number Differentiating CharacteristicsSELECTED AND TESTED FOR USE ON ELECTROLYTIC OXYGEN-NITROGEN GENERATOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5130-00-134-7428100820 INTERCHANGEABLE
Anvil,fastener Installation Tool
Huck International, Inc. Div Kingston Operations
7025-00-578-9429 INTERCHANGEABLE
Spring,push Button
5998-00-920-7680100820 INTERCHANGEABLE
Circuit Card Assembly
Crane Electronics, Inc.
5935-01-078-6787ST3M823-7 INTERCHANGEABLE
Plate,retaining,electrical Conne
The Boeing Company Div Defense
5910-01-411-4945100820 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Wavetek Rf Products, Inc
6620-01-471-2104103659 INTERCHANGEABLE
Indicator,electrical Tachometer
Maxima Technologies & Systems Llc
5306-01-688-2377 INTERCHANGEABLE
Bolt,u
Cross-Reference Index
Part NumberManufacturer
100820-1 L3harris Technologies, Inc Div Space & Airborne Systems (USA)
100820 Metadure Parts & Sales, Inc. (USA)
100820-1 Treadwell Corporation (delaware) Dba Treadwell Corp (USA)
Related Parts
5130-00-134-7428INTERCHANGEABLE
ANVIL,FASTENER INSTALLATION TOOL
100820
7025-00-578-9429INTERCHANGEABLE
SPRING,PUSH BUTTON
5998-00-920-7680INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
100820
5935-01-078-6787INTERCHANGEABLE
PLATE,RETAINING,ELECTRICAL CONNE
ST3M823-7
5910-01-411-4945INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
100820
6620-01-471-2104INTERCHANGEABLE
INDICATOR,ELECTRICAL TACHOMETER
103659
5306-01-688-2377INTERCHANGEABLE
BOLT,U

Frequently Asked Questions

What is NSN 3655-00-604-1641?

NSN 3655-00-604-1641 is a Head Assembly, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 3655 (No Item Name Available). Status: active.

What are the part numbers for NSN 3655-00-604-1641?

NSN 3655-00-604-1641 has 3 cross-referenced part numbers: 100820-1 (L3harris Technologies, Inc Div Space & Airborne Systems), 100820 (Metadure Parts & Sales, Inc.), 100820-1 (Treadwell Corporation (delaware) Dba Treadwell Corp).

What NSN replaces 3655-00-604-1641?

There are 7 known substitutes for 3655-00-604-1641: 5130-00-134-7428, 7025-00-578-9429, 5998-00-920-7680 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 100820-1?

Key specifications for 100820-1: Reference Number Differentiating Characteristics: SELECTED AND TESTED FOR USE ON ELECTROLYTIC OXYGEN-NITROGEN GENERATOR. 1 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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