PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25121Spring,helical,compression

Honeywell International Inc. Div Aerospace - Torrance · NSN 5360-00-263-4563 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-263-4563 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-263-4563. Primary manufacturer part number: 25121.
Features
  • Spring,helical,compression — FSC 5360
  • Inside Diameter: 0.250 INCHES NOMINAL IN
  • Surface Treatment: ZINC OVERALL
  • Spring Solid Length: 0.900 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
  • Coil Quantity: 28-1/2
  • End Style: SPRING END,SQUARED AND GROUND BOTH ENDS
  • Coil Helix Direction: LEFT-HAND
  • Spring Free Length: 2.600 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-263-4563, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-263-4563
Primary Part Number25121
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerHoneywell International Inc. Div Aerospace - Torrance
StatusACTIVE
Inside Diameter0.250 INCHES NOMINAL IN
Surface TreatmentZINC OVERALL
Spring Solid Length0.900 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
Coil Quantity28-1/2
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Coil Helix DirectionLEFT-HAND
Spring Free Length2.600 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Material Document and ClassificationMIL-S-6101 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Load Rating3.000 POUNDS NOMINAL LBS
Spring Length Under Load1.300 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Spring Free Outside Diameter0.3134 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4820-00-032-882625121 INTERCHANGEABLE
Seat,valve
Meggitt North Hollywood Inc
4530-00-080-734825121 INTERCHANGEABLE
Piston Assembly,fuel Unit
Danfoss Inc
5133-00-228-1332 INTERCHANGEABLE
Drill,twist
5330-00-715-5144 INTERCHANGEABLE
Gasket
5331-01-091-847325-121 INTERCHANGEABLE
O-Ring
Stewart & Stevenson Power Products Llc
3455-01-236-792425121 INTERCHANGEABLE
Cutter,milling,end
Niagara Cutter Inc
6685-01-426-4789251-21 INTERCHANGEABLE
Thermometer,indicating,capillary
Shinko Ind. Ltd
4720-01-537-7776 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
25121 PRIMARY Honeywell International Inc. Div Aerospace - Torrance (USA)
25121 Alliedsignal Inc Dba Allied-Signal Aerospace Co (USA)
Related Parts
4820-00-032-8826INTERCHANGEABLE
SEAT,VALVE
25121
4530-00-080-7348INTERCHANGEABLE
PISTON ASSEMBLY,FUEL UNIT
25121
5133-00-228-1332INTERCHANGEABLE
DRILL,TWIST
5330-00-715-5144INTERCHANGEABLE
GASKET
5331-01-091-8473INTERCHANGEABLE
O-RING
25-121
3455-01-236-7924INTERCHANGEABLE
CUTTER,MILLING,END
25121
6685-01-426-4789INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
251-21
4720-01-537-7776INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC

Frequently Asked Questions

What is NSN 5360-00-263-4563?

NSN 5360-00-263-4563 is a Spring,helical,compression, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-263-4563?

NSN 5360-00-263-4563 has 2 cross-referenced part numbers: 25121 (Honeywell International Inc. Div Aerospace - Torrance), 25121 (Alliedsignal Inc Dba Allied-Signal Aerospace Co).

What NSN replaces 5360-00-263-4563?

There are 8 known substitutes for 5360-00-263-4563: 4820-00-032-8826, 4530-00-080-7348, 5133-00-228-1332 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25121?

Key specifications for 25121: Inside Diameter: 0.250 INCHES NOMINAL IN; Surface Treatment: ZINC OVERALL; Spring Solid Length: 0.900 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN; Coil Quantity: 28-1/2. 13 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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