PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21881Spring,helical,compression

Eaton Aerospace Llc · NSN 5360-01-049-3876 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-01-049-3876 — this item is cataloged by the U.S. Government under National Stock Number 5360-01-049-3876. Primary manufacturer part number: 21881.
Features
  • Spring,helical,compression — FSC 5360
  • Inside Diameter: 0.103 INCHES NOMINAL IN
  • Coil Quantity: 13
  • Material Document and Classification: AMS 5673,COMP 17-7PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Style Designator: CYLINDRICAL
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
  • Spring Deflection Rate: 5.000 POUNDS PER INCH NOMINAL LBS
  • Spring Free Outside Diameter: 0.135 INCHES NOMINAL IN
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 5360-01-049-3876, 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 13 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-01-049-3876
Primary Part Number21881
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerEaton Aerospace Llc
StatusACTIVE
Inside Diameter0.103 INCHES NOMINAL IN
Coil Quantity13
Material Document and ClassificationAMS 5673,COMP 17-7PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorCYLINDRICAL
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Spring Deflection Rate5.000 POUNDS PER INCH NOMINAL LBS
Spring Free Outside Diameter0.135 INCHES NOMINAL IN
Spring Free Length0.520 INCHES NOMINAL IN
Spring Solid Length0.400 INCHES NOMINAL IN
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
MaterialSTEEL COMP 631 OVERALL
Spring Length Under Load0.440 INCHES NOMINAL IN
Load Rating0.40 POUNDS NOMINAL LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5305-00-007-3248SFSW4C4CPL01BK INTERCHANGEABLE
Screw,machine
Dupree, Inc Dba Stake Fastener Co Div Stake Fastener Co.
5340-00-105-6878 INTERCHANGEABLE
Standoff,threaded,spacing
3455-00-516-504019841 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5998-01-074-2464 INTERCHANGEABLE
Circuit Card Assembly
6140-01-307-1326 INTERCHANGEABLE
Battery,storage
5340-01-308-600721881 INTERCHANGEABLE
Cover,access
Mohn Frank Houston Inc
6530-01-591-96362221030 INTERCHANGEABLE
Carrier,litter,wheeled
Faretec Inc Div Faretec
Cross-Reference Index
Part NumberManufacturer
21881 PRIMARY Eaton Aerospace Llc (USA)
Related Parts
5305-00-007-3248INTERCHANGEABLE
SCREW,MACHINE
SFSW4C4CPL01BK
5340-00-105-6878INTERCHANGEABLE
STANDOFF,THREADED,SPACING
3455-00-516-5040INTERCHANGEABLE
REAMER,MACHINE
19841
5998-01-074-2464INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6140-01-307-1326INTERCHANGEABLE
BATTERY,STORAGE
5340-01-308-6007INTERCHANGEABLE
COVER,ACCESS
21881
6530-01-591-9636INTERCHANGEABLE
CARRIER,LITTER,WHEELED
2221030

Frequently Asked Questions

What is NSN 5360-01-049-3876?

NSN 5360-01-049-3876 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 5360-01-049-3876?

NSN 5360-01-049-3876 has 1 cross-referenced part number: 21881 (Eaton Aerospace Llc).

What NSN replaces 5360-01-049-3876?

There are 7 known substitutes for 5360-01-049-3876: 5305-00-007-3248, 5340-00-105-6878, 3455-00-516-5040 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21881?

Key specifications for 21881: Inside Diameter: 0.103 INCHES NOMINAL IN; Coil Quantity: 13; Material Document and Classification: AMS 5673,COMP 17-7PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Style Designator: CYLINDRICAL. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com