PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21091Spring,helical,extension

Science Applications International Corporation · NSN 5360-01-387-6477 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-01-387-6477 — this item is cataloged by the U.S. Government under National Stock Number 5360-01-387-6477. Primary manufacturer part number: 21091.
Features
  • Spring,helical,extension — FSC 5360
  • 1 verified cross-reference
  • Primary manufacturer: Science Applications International Corporation
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Spring,helical,extension, cataloged under National Stock Number 5360-01-387-6477, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Science Applications International Corporation. 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.

Catalog Facts
Item NameSpring,helical,extension
FSC / FSG5360 — No Item Name Available (FSG 53)
ManufacturersScience Applications International Corporation (CAGE 60595)
Technical Specifications
ParameterValue
NSN5360-01-387-6477
Primary Part Number21091
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerScience Applications International Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-156-3523204FFSL107E306A78X6945R INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
5950-00-220-992421091 INTERCHANGEABLE
Transformer,power
Astec America Inc.
5998-00-563-0569 INTERCHANGEABLE
Circuit Card Assembly
4730-01-293-6755PMP21091 INTERCHANGEABLE
Coupling,pump
Torc Tec Calibrations, Inc
3040-01-449-02532109-036 INTERCHANGEABLE
Shaft,shouldered
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
4920-01-620-664121091 INTERCHANGEABLE
Nrp,nozzle-Tungsten
Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
Cross-Reference Index
Part NumberManufacturer
21091 PRIMARY Science Applications International Corporation (USA)
Related Parts
3110-00-156-3523INTERCHANGEABLE
BEARING,BALL,ANNULAR
204FFSL107E306A78X6945R
5950-00-220-9924INTERCHANGEABLE
TRANSFORMER,POWER
21091
5998-00-563-0569INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4730-01-293-6755INTERCHANGEABLE
COUPLING,PUMP
PMP21091
3040-01-449-0253INTERCHANGEABLE
SHAFT,SHOULDERED
2109-036
4920-01-620-6641INTERCHANGEABLE
NRP,NOZZLE-TUNGSTEN
21091

Frequently Asked Questions

What is NSN 5360-01-387-6477?

NSN 5360-01-387-6477 is a Spring,helical,extension, manufactured by Science Applications International Corporation, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-01-387-6477?

NSN 5360-01-387-6477 has 1 cross-referenced part number: 21091 (Science Applications International Corporation).

What NSN replaces 5360-01-387-6477?

There are 6 known substitutes for 5360-01-387-6477: 3110-00-156-3523, 5950-00-220-9924, 5998-00-563-0569 and 3 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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