PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

71870Spring,helical,extension

Transupport Inc Dba Transupport Inc · NSN 5360-00-856-4023 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-856-4023 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-856-4023. Primary manufacturer part number: 71870.
Features
  • Spring,helical,extension — FSC 5360
  • Spring Length Under Load: 1.670 INCHES NOMINAL IN
  • Inside Diameter: 0.289 INCHES NOMINAL IN
  • Material: STEEL COMP 631 OVERALL
  • Style Designator: CYLINDRICAL
  • Load Rating: 4.00 POUNDS NOMINAL LBS
  • Design Type: CLOSED
  • Material Document and Classification: AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Comp 631 Overall construction
General Description

The Spring,helical,extension, cataloged under National Stock Number 5360-00-856-4023, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Transupport Inc Dba Transupport Inc. Government technical data includes 12 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-856-4023
Primary Part Number71870
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerTransupport Inc Dba Transupport Inc
StatusACTIVE
Spring Length Under Load1.670 INCHES NOMINAL IN
Inside Diameter0.289 INCHES NOMINAL IN
MaterialSTEEL COMP 631 OVERALL
Style DesignatorCYLINDRICAL
Load Rating4.00 POUNDS NOMINAL LBS
Design TypeCLOSED
Material Document and ClassificationAMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Spring Free Length1.586 INCHES NOMINAL IN
Spring Deflection Rate10.000 POUNDS PER INCH NOMINAL LBS
End StyleSHORT TWISTED HOOK BOTH ENDS
Spring Free Outside Diameter0.385 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-01-069-6077 INTERCHANGEABLE
Transformer,radio Frequency
6550-01-154-92136902525 INTERCHANGEABLE
Antibody Enhancement Test Reagen
Ortho-Clinical Diagnostics Inc Dba Ortho-Clinical Diagnostics Inc
Cross-Reference Index
Part NumberManufacturer
71870 PRIMARY Transupport Inc Dba Transupport Inc (USA)
71870 Triumph Engine Control Systems Llc (USA)
Related Parts
5950-01-069-6077INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6550-01-154-9213INTERCHANGEABLE
ANTIBODY ENHANCEMENT TEST REAGEN
6902525

Frequently Asked Questions

What is NSN 5360-00-856-4023?

NSN 5360-00-856-4023 is a Spring,helical,extension, manufactured by Transupport Inc Dba Transupport Inc, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-856-4023?

NSN 5360-00-856-4023 has 2 cross-referenced part numbers: 71870 (Transupport Inc Dba Transupport Inc), 71870 (Triumph Engine Control Systems Llc).

What NSN replaces 5360-00-856-4023?

There are 2 known substitutes for 5360-00-856-4023: 5950-01-069-6077, 6550-01-154-9213. Verify interchangeability with system specifications before substitution.

What are the specifications of 71870?

Key specifications for 71870: Spring Length Under Load: 1.670 INCHES NOMINAL IN; Inside Diameter: 0.289 INCHES NOMINAL IN; Material: STEEL COMP 631 OVERALL; Style Designator: CYLINDRICAL. 12 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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