PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

521252502Spring,helical,extension

Telemechanics Inc · NSN 5360-00-209-9948 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-209-9948 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-209-9948. Primary manufacturer part number: 521252502.
Features
  • Spring,helical,extension — FSC 5360
  • Material: STEEL OVERALL
  • End Style: SHORT TWISTED HOOK BOTH ENDS
  • Spring Free Length: 1.126 INCHES NOMINAL IN
  • Coil Helix Direction: RIGHT-HAND
  • Design Type: CLOSED
  • Inside Diameter: 0.119 INCHES NOMINAL IN
  • Coil Quantity: 58
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 5360-00-209-9948, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5360-00-209-9948
Primary Part Number521252502
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerTelemechanics Inc
StatusCANCELLED
MaterialSTEEL OVERALL
End StyleSHORT TWISTED HOOK BOTH ENDS
Spring Free Length1.126 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND
Design TypeCLOSED
Inside Diameter0.119 INCHES NOMINAL IN
Coil Quantity58
Spring Free Outside Diameter0.147 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Hook Radius0.047 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5310-00-012-5250125250 INTERCHANGEABLE
Nut,plain,slotted,hexagon
Chrysler Realty Company Llc Dba Daimler Chrysler
Cross-Reference Index
Part NumberManufacturer
125250 Lucent Technologies Inc Dba Federal Marketing Group (USA)
521252502 PRIMARY Telemechanics Inc (USA)
125250 Zf Industrieantriebe Witten Gmbh (DEU)
125250 American Telephone and Telegraph Co (USA)
Related Parts
5310-00-012-5250INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
125250

Frequently Asked Questions

What is NSN 5360-00-209-9948?

NSN 5360-00-209-9948 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 5360-00-209-9948?

NSN 5360-00-209-9948 has 4 cross-referenced part numbers: 125250 (Lucent Technologies Inc Dba Federal Marketing Group), 521252502 (Telemechanics Inc), 125250 (Zf Industrieantriebe Witten Gmbh), 125250 (American Telephone and Telegraph Co).

What NSN replaces 5360-00-209-9948?

There is 1 known substitute for 5360-00-209-9948: 5310-00-012-5250. Verify interchangeability with system specifications before substitution.

What are the specifications of 521252502?

Key specifications for 521252502: Material: STEEL OVERALL; End Style: SHORT TWISTED HOOK BOTH ENDS; Spring Free Length: 1.126 INCHES NOMINAL IN; Coil Helix Direction: RIGHT-HAND. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5360-00-209-9948 still in active supply?

NSN 5360-00-209-9948 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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