PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5123330Seat,helical Compression Spring

Rolls-Royce Solutions America Inc · NSN 5340-00-055-0831 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-055-0831 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-055-0831. Primary manufacturer part number: 5123330.
Features
  • Seat,helical Compression Spring — FSC 5340
  • Distance From End to First Step: 0.1250 INCHES NOMINAL IN
  • Design Type: SOLID
  • End Diameter: 0.7500 INCHES NOMINAL IN
  • Material: STEEL
  • First Step Diameter: 0.9380 INCHES NOMINAL IN
  • Bore Diameter: 0.5000 INCHES NOMINAL IN
  • First Step Length: 0.1250 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-055-0831, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-055-0831
Primary Part Number5123330
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerRolls-Royce Solutions America Inc
StatusACTIVE
Distance From End to First Step0.1250 INCHES NOMINAL IN
Design TypeSOLID
End Diameter0.7500 INCHES NOMINAL IN
MaterialSTEEL
First Step Diameter0.9380 INCHES NOMINAL IN
Bore Diameter0.5000 INCHES NOMINAL IN
First Step Length0.1250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5340-01-553-8554 (33041)
HAZMATNo
Unit of IssueEA
Verified Substitutes 4
5340-01-553-855433041 SUCCESSOR
Plate,retaining,seal
Powerbrace Corporation Dba Powerbrace America
3455-00-892-4677 INTERCHANGEABLE
File,rotary
5962-01-282-7007 INTERCHANGEABLE
Microcircuit,digital
6685-01-385-6821 INTERCHANGEABLE
Thermometer,self-Indicating,digi
Cross-Reference Index
Part NumberManufacturer
K512330 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
5123330 Delphi France SAS (FRA)
5123330 General Motors Corp (USA)
PC5123330 Power Components (deutschland) Gmbh (DEU)
5123330 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
5123330 PRIMARY Rolls-Royce Solutions America Inc (USA)
5340000550831 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
K512330 Korody-Colyer Corp a Cr Industries Co (USA)
33041 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
2815000550831 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
Related Parts
SUCCESSOR 5340-01-553-8554 Plate,retaining,seal · 33041
3455-00-892-4677INTERCHANGEABLE
FILE,ROTARY
5962-01-282-7007INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
6685-01-385-6821INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,DIGI

Frequently Asked Questions

What is NSN 5340-00-055-0831?

NSN 5340-00-055-0831 is a Seat,helical Compression Spring, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-055-0831?

NSN 5340-00-055-0831 has 10 cross-referenced part numbers: K512330 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 5123330 (Delphi France SAS), 5123330 (General Motors Corp), PC5123330 (Power Components (deutschland) Gmbh), 5123330 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales) and 5 more.

What NSN replaces 5340-00-055-0831?

There are 4 known substitutes for 5340-00-055-0831: 5340-01-553-8554, 3455-00-892-4677, 5962-01-282-7007 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5123330?

Key specifications for 5123330: Distance From End to First Step: 0.1250 INCHES NOMINAL IN; Design Type: SOLID; End Diameter: 0.7500 INCHES NOMINAL IN; Material: STEEL. 9 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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