PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

304121Spring,helical,compression

Eaton Aerospace, Llc Dba Jackson South · NSN 5360-00-948-0777 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-948-0777 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-948-0777. Primary manufacturer part number: 304121.
Features
  • Spring,helical,compression — FSC 5360
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
  • Spring Deflection Rate: 140.000 POUNDS PER INCH NOMINAL LBS
  • Spring Free Outside Diameter: 0.245 INCHES MAXIMUM IN
  • Style Designator: CYLINDRICAL
  • Material Document and Classification: AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Material: STEEL COMP 631 OVERALL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Comp 631 Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-948-0777, is classified within Federal Supply Class 5360 (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 11 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-948-0777
Primary Part Number304121
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerEaton Aerospace, Llc Dba Jackson South
StatusACTIVE
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Spring Deflection Rate140.000 POUNDS PER INCH NOMINAL LBS
Spring Free Outside Diameter0.245 INCHES MAXIMUM IN
Style DesignatorCYLINDRICAL
Material Document and ClassificationAMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentPASSIVATE OVERALL
MaterialSTEEL COMP 631 OVERALL
Spring Free Length0.541 INCHES NOMINAL IN
Spring Solid Length0.251 INCHES MAXIMUM IN
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Inside Diameter0.144 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5905-00-279-86671 3-4D48F10-0HM INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5315-00-959-677230412-1 INTERCHANGEABLE
Key,machine
Rtx Corporation Div Pratt & Whitney
5895-01-344-354430412-1 INTERCHANGEABLE
Cover,electronic Communication E
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
4920-01-571-8228 INTERCHANGEABLE
Overload Module,air
7045-01-702-552430412-1 INTERCHANGEABLE
Case,data Carrier
Science Applications International Corporation
Cross-Reference Index
Part NumberManufacturer
304121 PRIMARY Eaton Aerospace, Llc Dba Jackson South (USA)
Related Parts
5905-00-279-8667INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
1 3-4D48F10-0HM
5315-00-959-6772INTERCHANGEABLE
KEY,MACHINE
30412-1
5895-01-344-3544INTERCHANGEABLE
COVER,ELECTRONIC COMMUNICATION E
30412-1
4920-01-571-8228INTERCHANGEABLE
OVERLOAD MODULE,AIR
7045-01-702-5524INTERCHANGEABLE
CASE,DATA CARRIER
30412-1

Frequently Asked Questions

What is NSN 5360-00-948-0777?

NSN 5360-00-948-0777 is a Spring,helical,compression, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-948-0777?

NSN 5360-00-948-0777 has 1 cross-referenced part number: 304121 (Eaton Aerospace, Llc Dba Jackson South).

What NSN replaces 5360-00-948-0777?

There are 5 known substitutes for 5360-00-948-0777: 5905-00-279-8667, 5315-00-959-6772, 5895-01-344-3544 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 304121?

Key specifications for 304121: Coil Helix Direction: RIGHT-HAND OR LEFT-HAND; Spring Deflection Rate: 140.000 POUNDS PER INCH NOMINAL LBS; Spring Free Outside Diameter: 0.245 INCHES MAXIMUM IN; Style Designator: CYLINDRICAL. 11 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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