PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51864Seat,helical Compression Spring

Eaton Aerospace Llc Dba Eaton Aerospace Jackson · NSN 5340-01-699-3603 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-699-3603 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-699-3603. Primary manufacturer part number: 51864.
Features
  • Seat,helical Compression Spring — FSC 5340
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-699-3603, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Eaton Aerospace Llc Dba Eaton Aerospace Jackson. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-699-3603
Primary Part Number51864
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Eaton Aerospace Jackson
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 5
5940-00-113-8179MS25036-107 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
4720-00-411-38655186-4 INTERCHANGEABLE
Hose,air Duct
Flexco, Inc
3120-00-688-852751864 INTERCHANGEABLE
Retainer,bearing
Parker Hannifin Corporation Div Hydraulic Systems Division
4820-01-183-25965-1864 PIECE 19 INTERCHANGEABLE
Disk,valve
Mark Controls Corp Pacific Valves Div
4820-01-192-35225-1864 PIECE 21 6IN INTERCHANGEABLE
Seat,valve
Mark Controls Corp Pacific Valves Div
Cross-Reference Index
Part NumberManufacturer
51864 PRIMARY Eaton Aerospace Llc Dba Eaton Aerospace Jackson (USA)
Related Parts
5940-00-113-8179INTERCHANGEABLE
TERMINAL,LUG
MS25036-107
4720-00-411-3865INTERCHANGEABLE
HOSE,AIR DUCT
5186-4
3120-00-688-8527INTERCHANGEABLE
RETAINER,BEARING
51864
4820-01-183-2596INTERCHANGEABLE
DISK,VALVE
5-1864 PIECE 19
4820-01-192-3522INTERCHANGEABLE
SEAT,VALVE
5-1864 PIECE 21 6IN

Frequently Asked Questions

What is NSN 5340-01-699-3603?

NSN 5340-01-699-3603 is a Seat,helical Compression Spring, manufactured by Eaton Aerospace Llc Dba Eaton Aerospace Jackson, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-699-3603?

NSN 5340-01-699-3603 has 1 cross-referenced part number: 51864 (Eaton Aerospace Llc Dba Eaton Aerospace Jackson).

What NSN replaces 5340-01-699-3603?

There are 5 known substitutes for 5340-01-699-3603: 5940-00-113-8179, 4720-00-411-3865, 3120-00-688-8527 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51864?

Key specifications for 51864: End Item Identification: F-22 AIRCRAFT. 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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