PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2421Spring,helical,extension

Telemechanics Inc · NSN 5360-00-205-4590 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-205-4590 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-205-4590. Primary manufacturer part number: 2421.
Features
  • Spring,helical,extension — FSC 5360
  • Inside Diameter: 0.126 INCHES NOMINAL IN
  • End Style: SHORT TWISTED HOOK BOTH ENDS
  • Material: STEEL OVERALL
  • Surface Treatment: TIN OVERALL
  • Spring Free Outside Diameter: 0.170 INCHES NOMINAL IN
  • Design Type: CLOSED
  • Style Designator: CYLINDRICAL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,extension, cataloged under National Stock Number 5360-00-205-4590, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Telemechanics Inc. Government technical data includes 11 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5360-00-205-4590
Primary Part Number2421
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerTelemechanics Inc
StatusCANCELLED
Inside Diameter0.126 INCHES NOMINAL IN
End StyleSHORT TWISTED HOOK BOTH ENDS
MaterialSTEEL OVERALL
Surface TreatmentTIN OVERALL
Spring Free Outside Diameter0.170 INCHES NOMINAL IN
Design TypeCLOSED
Style DesignatorCYLINDRICAL
Spring Free Length0.825 INCHES NOMINAL IN
Coil Quantity24
Coil Helix DirectionRIGHT-HAND
Hook Radius0.063 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5340-00-075-27382421 INTERCHANGEABLE
Bolt,mortise
Edro Corporation, the Dba Edro Corp
3030-00-267-6780150B1/8X1/32X18 INTERCHANGEABLE
Belting,flat
Contitech Usa, Inc Dba Veyance Technologies
2930-00-831-389326224-30 INTERCHANGEABLE
Control Assembly Ra
Stewart & Stevenson Power Products Llc
6930-00-925-4490242-1 INTERCHANGEABLE
Indicator,simulator
Jewell Instruments Llc
5935-01-052-92122421 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
6750-01-083-1270 INTERCHANGEABLE
Paper,copying,diazo Process
4820-01-147-1167 INTERCHANGEABLE
Seat,valve
6145-01-176-9834282 INTERCHANGEABLE
Braid,wire
Omega Wire, Inc. Dba Bare Wire Div Div Continental Cordage
5220-01-275-974611826 INTERCHANGEABLE
Gage,comparator,air
Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
3120-01-281-909424-21 INTERCHANGEABLE
Bearing,sleeve
Prestolite Electric Inc
Cross-Reference Index
Part NumberManufacturer
2421 PRIMARY Telemechanics Inc (USA)
2421 American Telephone and Telegraph Co (USA)
Related Parts
5340-00-075-2738INTERCHANGEABLE
BOLT,MORTISE
2421
3030-00-267-6780INTERCHANGEABLE
BELTING,FLAT
150B1/8X1/32X18
2930-00-831-3893INTERCHANGEABLE
CONTROL ASSEMBLY RA
26224-30
6930-00-925-4490INTERCHANGEABLE
INDICATOR,SIMULATOR
242-1
5935-01-052-9212INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
2421
6750-01-083-1270INTERCHANGEABLE
PAPER,COPYING,DIAZO PROCESS
4820-01-147-1167INTERCHANGEABLE
SEAT,VALVE
6145-01-176-9834INTERCHANGEABLE
BRAID,WIRE
282
5220-01-275-9746INTERCHANGEABLE
GAGE,COMPARATOR,AIR
11826
3120-01-281-9094INTERCHANGEABLE
BEARING,SLEEVE
24-21
5999-01-335-5014INTERCHANGEABLE
HEATER,THERMAL RELEASE
2421

Frequently Asked Questions

What is NSN 5360-00-205-4590?

NSN 5360-00-205-4590 is a Spring,helical,extension, manufactured by Telemechanics Inc, classified under FSC 5360 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5360-00-205-4590?

NSN 5360-00-205-4590 has 2 cross-referenced part numbers: 2421 (Telemechanics Inc), 2421 (American Telephone and Telegraph Co).

What NSN replaces 5360-00-205-4590?

There are 11 known substitutes for 5360-00-205-4590: 5340-00-075-2738, 3030-00-267-6780, 2930-00-831-3893 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2421?

Key specifications for 2421: Inside Diameter: 0.126 INCHES NOMINAL IN; End Style: SHORT TWISTED HOOK BOTH ENDS; Material: STEEL OVERALL; Surface Treatment: TIN OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5360-00-205-4590 still in active supply?

NSN 5360-00-205-4590 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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