PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

91281Spring,helical,extension

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 5360-00-316-4450 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-316-4450 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-316-4450. Primary manufacturer part number: 91281.
Features
  • Spring,helical,extension — FSC 5360
  • Material: STEEL OVERALL
  • Opening Width: 0.125 INCHES NOMINAL BOTH ENDS IN
  • Spring Free Length: 0.689 INCHES NOMINAL IN
  • Hook Radius: 0.188 INCHES NOMINAL BOTH ENDS IN
  • Surface Treatment: NICKEL OVERALL
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
  • Inside Diameter: 0.311 INCHES NOMINAL IN
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 5360-00-316-4450, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5360-00-316-4450
Primary Part Number91281
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusACTIVE
MaterialSTEEL OVERALL
Opening Width0.125 INCHES NOMINAL BOTH ENDS IN
Spring Free Length0.689 INCHES NOMINAL IN
Hook Radius0.188 INCHES NOMINAL BOTH ENDS IN
Surface TreatmentNICKEL OVERALL
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Inside Diameter0.311 INCHES NOMINAL IN
Coil Quantity9-1/2
Style DesignatorCYLINDRICAL
End StyleMACHINED HALF LOOP BOTH ENDS
Spring Free Outside Diameter0.375 INCHES NOMINAL IN
Design TypeOPEN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5315-00-241-74639128-1 INTERCHANGEABLE
Pin,straight,headless
Cummins Inc.
2995-01-253-639691281 INTERCHANGEABLE
Turbine Bearing
Ge Aviation Systems, Llc
Cross-Reference Index
Part NumberManufacturer
91281 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
5315-00-241-7463INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
9128-1
2995-01-253-6396INTERCHANGEABLE
TURBINE BEARING
91281

Frequently Asked Questions

What is NSN 5360-00-316-4450?

NSN 5360-00-316-4450 is a Spring,helical,extension, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-316-4450?

NSN 5360-00-316-4450 has 1 cross-referenced part number: 91281 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 5360-00-316-4450?

There are 2 known substitutes for 5360-00-316-4450: 5315-00-241-7463, 2995-01-253-6396. Verify interchangeability with system specifications before substitution.

What are the specifications of 91281?

Key specifications for 91281: Material: STEEL OVERALL; Opening Width: 0.125 INCHES NOMINAL BOTH ENDS IN; Spring Free Length: 0.689 INCHES NOMINAL IN; Hook Radius: 0.188 INCHES NOMINAL BOTH ENDS IN. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com