PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

03400004Lock Seal Assembly

Department of the Navy Naval Undersea Warfare Center New London Div · NSN 5985-01-166-4389 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-166-4389 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-166-4389. Primary manufacturer part number: 03400004.
Features
  • Lock Seal Assembly — FSC 5985
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: QUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION
  • 15 verified cross-references
  • Primary manufacturer: Department of the Navy Naval Undersea Warfare Center New London Div
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Lock Seal Assembly, cataloged under National Stock Number 5985-01-166-4389, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Department of the Navy Naval Undersea Warfare Center New London Div. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-01-166-4389
Primary Part Number03400004
Item NameLock Seal Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerDepartment of the Navy Naval Undersea Warfare Center New London Div
StatusCANCELLED
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsQUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-01-128-9216D-2021 INTERCHANGEABLE
Nozzle,spray,fluid-Emulsion
Insinger Machine Co
2920-01-296-550510497522 INTERCHANGEABLE
Drive,engine,electrical Starter
Delco Remy America Inc
4320-01-651-69473400004 INTERCHANGEABLE
Seal Assembly,shaft,spring Loade
Department of the Navy Naval Undersea Warfare Center New London Div
5340-01-666-4088D2021-2 INTERCHANGEABLE
Bracket,mounting
Dynatect Manufacturing, Inc. Dba Dynatect Manufacturing Inc
5340-01-666-4146D2021-1 INTERCHANGEABLE
Bracket,mounting
Dynatect Manufacturing, Inc. Dba Dynatect Manufacturing Inc
5340-01-666-5098D2021-9 INTERCHANGEABLE
Plate,mounting
Dynatect Manufacturing, Inc. Dba Dynatect Manufacturing Inc
5340-01-666-6380D2021-8 INTERCHANGEABLE
Plate,mounting
Dynatect Manufacturing, Inc. Dba Dynatect Manufacturing Inc
3040-01-667-7802D2021-4 INTERCHANGEABLE
Idler,shaft
Dynatect Manufacturing, Inc. Dba Dynatect Manufacturing Inc
2590-01-668-2142GT-12805 INTERCHANGEABLE
Door,roller Curtain
Dynatect Manufacturing, Inc. Dba Dynatect Manufacturing Inc
5985-01-672-3210 INTERCHANGEABLE
Lock Seal Assembly
Cross-Reference Index
Part NumberManufacturer
03400004 Department of the Navy Naval Undersea Warfare Center New London Div (USA)
0340000 FIND 3 Department of the Navy Naval Undersea Warfare Center New London Div (USA)
03400004 U.s.a. Spares Inc. (USA)
03400001 REV D ITEM 3 Department of the Navy Naval Undersea Warfare Center New London Div (USA)
03400004 Derbyshire Machine & Tool Co (USA)
D20-2-1 Allard Nazarian Group, Inc. Dba Granite State Manufacturing (USA)
03400001 FIND 3 Department of the Navy Naval Undersea Warfare Center New London Div (USA)
D20-2-1SQ Naval Inventory Control Point Mechanicsburg (USA)
03400001-ITEM-3 Department of the Navy Naval Undersea Warfare Center New London Div (USA)
0340000 FIND 3SQ Naval Inventory Control Point Mechanicsburg (USA)
03400004 Naval Undersea Warfare Ctr (USA)
03400004SQ Naval Inventory Control Point Mechanicsburg (USA)
03400004 Naval Sea Systems Command (USA)
03400001 FIND 3SQ Naval Inventory Control Point Mechanicsburg (USA)
03400004 REV C Department of the Navy Naval Undersea Warfare Center New London Div (USA)
Related Parts
4730-01-128-9216INTERCHANGEABLE
NOZZLE,SPRAY,FLUID-EMULSION
D-2021
2920-01-296-5505INTERCHANGEABLE
DRIVE,ENGINE,ELECTRICAL STARTER
10497522
4320-01-651-6947INTERCHANGEABLE
SEAL ASSEMBLY,SHAFT,SPRING LOADE
3400004
5340-01-666-4088INTERCHANGEABLE
BRACKET,MOUNTING
D2021-2
5340-01-666-4146INTERCHANGEABLE
BRACKET,MOUNTING
D2021-1
5340-01-666-5098INTERCHANGEABLE
PLATE,MOUNTING
D2021-9
5340-01-666-6380INTERCHANGEABLE
PLATE,MOUNTING
D2021-8
3040-01-667-7802INTERCHANGEABLE
IDLER,SHAFT
D2021-4
2590-01-668-2142INTERCHANGEABLE
DOOR,ROLLER CURTAIN
GT-12805
5985-01-672-3210INTERCHANGEABLE
LOCK SEAL ASSEMBLY
2590-01-674-2141INTERCHANGEABLE
DOOR,ROLLER CURTAIN
D2021-5
3040-01-674-5256INTERCHANGEABLE
SHAFT,SHOULDERED
D2021-3

Frequently Asked Questions

What is NSN 5985-01-166-4389?

NSN 5985-01-166-4389 is a Lock Seal Assembly, manufactured by Department of the Navy Naval Undersea Warfare Center New London Div, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-01-166-4389?

NSN 5985-01-166-4389 has 15 cross-referenced part numbers: 03400004 (Department of the Navy Naval Undersea Warfare Center New London Div), 0340000 FIND 3 (Department of the Navy Naval Undersea Warfare Center New London Div), 03400004 (U.s.a. Spares Inc.), 03400001 REV D ITEM 3 (Department of the Navy Naval Undersea Warfare Center New London Div), 03400004 (Derbyshire Machine & Tool Co) and 10 more.

What NSN replaces 5985-01-166-4389?

There are 12 known substitutes for 5985-01-166-4389: 4730-01-128-9216, 2920-01-296-5505, 4320-01-651-6947 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 03400004?

Key specifications for 03400004: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: QUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-01-166-4389 still in active supply?

NSN 5985-01-166-4389 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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