PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

543549Spring,helical,compression

Ontic Engineering & Manufacturing, Inc Dba Ontic Us · NSN 5360-00-738-9210 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-738-9210 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-738-9210. Primary manufacturer part number: 543549.
Features
  • Spring,helical,compression — FSC 5360
  • Inside Diameter: 0.382 INCHES NOMINAL IN
  • End Style: SPRING END,SQUARED AND GROUND BOTH ENDS
  • Spring Solid Length: 0.720 INCHES NOMINAL IN
  • Material Document and Classification: HS261,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
  • Spring Free Length: 1.075 INCHES NOMINAL IN
  • Spring Deflection Rate: 6.000 POUNDS PER INCH NOMINAL LBS
  • Style Designator: CYLINDRICAL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Nickel Alloy Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-738-9210, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 11 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-738-9210
Primary Part Number543549
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerOntic Engineering & Manufacturing, Inc Dba Ontic Us
StatusACTIVE
Inside Diameter0.382 INCHES NOMINAL IN
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Spring Solid Length0.720 INCHES NOMINAL IN
Material Document and ClassificationHS261,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
Spring Free Length1.075 INCHES NOMINAL IN
Spring Deflection Rate6.000 POUNDS PER INCH NOMINAL LBS
Style DesignatorCYLINDRICAL
Load Rating55.000 POUNDS NOMINAL LBS
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
MaterialNICKEL ALLOY OVERALL
Coil Quantity9.6
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-01-020-923422361 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
Cross-Reference Index
Part NumberManufacturer
543549 PRIMARY Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA)
543549 Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
Related Parts
5330-01-020-9234INTERCHANGEABLE
SEAL,PLAIN ENCASED
22361

Frequently Asked Questions

What is NSN 5360-00-738-9210?

NSN 5360-00-738-9210 is a Spring,helical,compression, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-738-9210?

NSN 5360-00-738-9210 has 2 cross-referenced part numbers: 543549 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us), 543549 (Hamilton Sundstrand Corporation Dba Collins Aerospace).

What NSN replaces 5360-00-738-9210?

There is 1 known substitute for 5360-00-738-9210: 5330-01-020-9234. Verify interchangeability with system specifications before substitution.

What are the specifications of 543549?

Key specifications for 543549: Inside Diameter: 0.382 INCHES NOMINAL IN; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Spring Solid Length: 0.720 INCHES NOMINAL IN; Material Document and Classification: HS261,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL. 11 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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