PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

304120Seat,helical Compression Spring

Eaton Aerospace, Llc Dba Jackson South · NSN 5340-00-920-1518 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-920-1518 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-920-1518. Primary manufacturer part number: 304120.
Features
  • Seat,helical Compression Spring — FSC 5340
  • Material: STEEL
  • Material Document and Classification: VICKERS VS13-1-7-1B MFR REF SINGLE MATERIAL RESPONSE
  • Supplementary Features: USED ON PUMP SUBASSEMBLY P/N 610840 ON LGM-30 MISSILE SYSTEM; T.O.35C1-2-48-3 FIG 6-17 APPLIES
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Aerospace, Llc Dba Jackson South
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-920-1518, 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 Jackson South. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-920-1518
Primary Part Number304120
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusACTIVE
MaterialSTEEL
Material Document and ClassificationVICKERS VS13-1-7-1B MFR REF SINGLE MATERIAL RESPONSE
Supplementary FeaturesUSED ON PUMP SUBASSEMBLY P/N 610840 ON LGM-30 MISSILE SYSTEM; T.O.35C1-2-48-3 FIG 6-17 APPLIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 3
5905-00-100-3962L25J2R0 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
4220-00-436-03998520-10 INTERCHANGEABLE
Boots,divers'
Dacor Corp
5985-00-757-05493041-20 INTERCHANGEABLE
Coupler,directional
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
Cross-Reference Index
Part NumberManufacturer
304120 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
Related Parts
5905-00-100-3962INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
L25J2R0
4220-00-436-0399INTERCHANGEABLE
BOOTS,DIVERS'
8520-10
5985-00-757-0549INTERCHANGEABLE
COUPLER,DIRECTIONAL
3041-20

Frequently Asked Questions

What is NSN 5340-00-920-1518?

NSN 5340-00-920-1518 is a Seat,helical Compression Spring, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-920-1518?

NSN 5340-00-920-1518 has 1 cross-referenced part number: 304120 (Eaton Aerospace, Llc Dba Jackson South).

What NSN replaces 5340-00-920-1518?

There are 3 known substitutes for 5340-00-920-1518: 5905-00-100-3962, 4220-00-436-0399, 5985-00-757-0549. Verify interchangeability with system specifications before substitution.

What are the specifications of 304120?

Key specifications for 304120: Material: STEEL; Material Document and Classification: VICKERS VS13-1-7-1B MFR REF SINGLE MATERIAL RESPONSE; Supplementary Features: USED ON PUMP SUBASSEMBLY P/N 610840 ON LGM-30 MISSILE SYSTEM; T.O.35C1-2-48-3 FIG 6-17 APPLIES. 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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