PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21879Spring,helical,compression

Eaton Aerospace Llc · NSN 5360-01-049-3877 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-01-049-3877 — this item is cataloged by the U.S. Government under National Stock Number 5360-01-049-3877. Primary manufacturer part number: 21879.
Features
  • Spring,helical,compression — FSC 5360
  • Coil Quantity: 24
  • Spring Free Outside Diameter: 0.135 INCHES NOMINAL IN
  • End Style: SPRING END,SQUARED AND GROUND BOTH ENDS
  • Style Designator: CYLINDRICAL
  • Spring Solid Length: 0.600 INCHES NOMINAL IN
  • Spring Deflection Rate: 15.000 POUNDS PER INCH NOMINAL LBS
  • 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 5360-01-049-3877, 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. Government technical data includes 10 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-01-049-3877
Primary Part Number21879
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerEaton Aerospace Llc
StatusACTIVE
Coil Quantity24
Spring Free Outside Diameter0.135 INCHES NOMINAL IN
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Style DesignatorCYLINDRICAL
Spring Solid Length0.600 INCHES NOMINAL IN
Spring Deflection Rate15.000 POUNDS PER INCH NOMINAL LBS
MaterialSTEEL COMP 631 OVERALL
Inside Diameter0.087 INCHES NOMINAL IN
Material Document and ClassificationAMS 5673,COMP 17-7PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-144-8522118515 INTERCHANGEABLE
Bearing,ball,annular
Komatsu America Corp.
3455-00-516-504219839 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5930-00-525-048154A50B262 INTERCHANGEABLE
Switch,sensitive
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5325-01-118-0935 INTERCHANGEABLE
Stud,turnlock Fastener
5930-01-191-973121879 INTERCHANGEABLE
Retainer,electrical Switch
Barksdale, Inc
5325-01-550-651621879 INTERCHANGEABLE
Stud,turnlock Fastener
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Cross-Reference Index
Part NumberManufacturer
21879 PRIMARY Eaton Aerospace Llc (USA)
Related Parts
3110-00-144-8522INTERCHANGEABLE
BEARING,BALL,ANNULAR
118515
3455-00-516-5042INTERCHANGEABLE
REAMER,MACHINE
19839
5930-00-525-0481INTERCHANGEABLE
SWITCH,SENSITIVE
54A50B262
5325-01-118-0935INTERCHANGEABLE
STUD,TURNLOCK FASTENER
5930-01-191-9731INTERCHANGEABLE
RETAINER,ELECTRICAL SWITCH
21879
5325-01-550-6516INTERCHANGEABLE
STUD,TURNLOCK FASTENER
21879

Frequently Asked Questions

What is NSN 5360-01-049-3877?

NSN 5360-01-049-3877 is a Spring,helical,compression, manufactured by Eaton Aerospace Llc, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-01-049-3877?

NSN 5360-01-049-3877 has 1 cross-referenced part number: 21879 (Eaton Aerospace Llc).

What NSN replaces 5360-01-049-3877?

There are 6 known substitutes for 5360-01-049-3877: 3110-00-144-8522, 3455-00-516-5042, 5930-00-525-0481 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21879?

Key specifications for 21879: Coil Quantity: 24; Spring Free Outside Diameter: 0.135 INCHES NOMINAL IN; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Style Designator: CYLINDRICAL. 10 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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