PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

35-99Spring,helical,extension

Telemechanics Inc · NSN 5360-00-663-3353 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-663-3353 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-663-3353. Primary manufacturer part number: 35-99.
Features
  • Spring,helical,extension — FSC 5360
  • Style Designator: CYLINDRICAL
  • Spring Free Length: 0.531 INCHES NOMINAL IN
  • Hook Radius: 0.062 INCHES NOMINAL BOTH ENDS IN
  • Material: STEEL OVERALL
  • Spring Free Outside Diameter: 0.190 INCHES NOMINAL IN
  • Inside Diameter: 0.142 INCHES NOMINAL IN
  • End Style: SHORT TWISTED HOOK BOTH ENDS
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 5360-00-663-3353, 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 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5360-00-663-3353
Primary Part Number35-99
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerTelemechanics Inc
StatusCANCELLED
Style DesignatorCYLINDRICAL
Spring Free Length0.531 INCHES NOMINAL IN
Hook Radius0.062 INCHES NOMINAL BOTH ENDS IN
MaterialSTEEL OVERALL
Spring Free Outside Diameter0.190 INCHES NOMINAL IN
Inside Diameter0.142 INCHES NOMINAL IN
End StyleSHORT TWISTED HOOK BOTH ENDS
Coil Quantity9
Design TypeCLOSED
Coil Helix DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-012-52581848D INTERCHANGEABLE
Nut,plain,slotted,hexagon
Lincoln Electric Holdings Inc
6220-00-026-48008389855 INTERCHANGEABLE
Directional Light,vehicular
U S Army Tank Automotive Command Amsta-Im-Mm
5310-00-194-81953599 INTERCHANGEABLE
Nut,plain,hexagon
Telemechanics Inc
5365-00-225-9043217-30653 INTERCHANGEABLE
Bushing,nonmetallic
Aircraft Wheel and Brake, Llc Dba Cleveland Wheel and Brake Systems
5136-00-254-4518 INTERCHANGEABLE
Tap,thread Cutting
5950-00-893-8553 INTERCHANGEABLE
Reactor
9330-00-993-87273599 INTERCHANGEABLE
Plastic Sheet
The Boeing Company Div Legacy Wichita
5998-01-013-6133003599 INTERCHANGEABLE
Printed Wiring Board
Dynalec Corporation
6685-01-185-1246AS26860 INTERCHANGEABLE
Indicator,humidity,plug
Sae International Dba Sae International
5998-01-204-1670 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
125258 At and T Corp (USA)
35-99 PRIMARY Telemechanics Inc (USA)
35-99 At and T Corp (USA)
125258 PRIMARY Telemechanics Inc (USA)
Related Parts
5310-00-012-5258INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
1848D
6220-00-026-4800INTERCHANGEABLE
DIRECTIONAL LIGHT,VEHICULAR
8389855
5310-00-194-8195INTERCHANGEABLE
NUT,PLAIN,HEXAGON
3599
5365-00-225-9043INTERCHANGEABLE
BUSHING,NONMETALLIC
217-30653
5136-00-254-4518INTERCHANGEABLE
TAP,THREAD CUTTING
5950-00-893-8553INTERCHANGEABLE
REACTOR
9330-00-993-8727INTERCHANGEABLE
PLASTIC SHEET
3599
5998-01-013-6133INTERCHANGEABLE
PRINTED WIRING BOARD
003599
6685-01-185-1246INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG
AS26860
5998-01-204-1670INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4130-01-219-7224INTERCHANGEABLE
COMPRESSOR UNIT,REFRIGERATION
6625-01-331-6037INTERCHANGEABLE
CONVERTER,WAVE FORM
63A141584P1

Frequently Asked Questions

What is NSN 5360-00-663-3353?

NSN 5360-00-663-3353 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 5360-00-663-3353?

NSN 5360-00-663-3353 has 4 cross-referenced part numbers: 125258 (At and T Corp), 35-99 (Telemechanics Inc), 35-99 (At and T Corp), 125258 (Telemechanics Inc).

What NSN replaces 5360-00-663-3353?

There are 12 known substitutes for 5360-00-663-3353: 5310-00-012-5258, 6220-00-026-4800, 5310-00-194-8195 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 35-99?

Key specifications for 35-99: Style Designator: CYLINDRICAL; Spring Free Length: 0.531 INCHES NOMINAL IN; Hook Radius: 0.062 INCHES NOMINAL BOTH ENDS IN; Material: STEEL OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5360-00-663-3353 still in active supply?

NSN 5360-00-663-3353 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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