PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS5206J04Nut,tube Coupling

Sae International Dba Sae International · NSN 4730-01-178-6465 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-178-6465 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-178-6465. Primary manufacturer part number: AS5206J04.
Features
  • Nut,tube Coupling — FSC 4730
  • Width Across Flats: 0.563 INCHES NOMINAL IN
  • Fabrication Method: MACHINED
  • Thread Series: UNF
  • Smallest Inside Diameter: 0.255 INCHES MINIMUM AND 0.258 INCHES MAXIMUM IN
  • Seat Angle: 33.0 DEGREES NOMINAL
  • Nominal Tube Outside Diameter: 0.250 INCHES IN
  • Thread Quantity Per Inch: 20
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Nut,tube Coupling, cataloged under National Stock Number 4730-01-178-6465, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-01-178-6465
Primary Part NumberAS5206J04
Item NameNut,tube Coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusCANCELLED
Width Across Flats0.563 INCHES NOMINAL IN
Fabrication MethodMACHINED
Thread SeriesUNF
Smallest Inside Diameter0.255 INCHES MINIMUM AND 0.258 INCHES MAXIMUM IN
Seat Angle33.0 DEGREES NOMINAL
Nominal Tube Outside Diameter0.250 INCHES IN
Thread Quantity Per Inch20
Nominal Thread Size0.438 INCHES IN
Surface TreatmentPASSIVATE OVERALL
MaterialSTEEL COMP 304 OVERALL
Specification/standard Data88044-AN817 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Thread Class3B
Thread DirectionRIGHT-HAND
Nut StyleTUBE COUPLING
Nut Height1.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4730-00-203-7261AS5206-12 INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
4730-00-433-3191AS5206W10 INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
4730-00-433-3192AS5206W12 INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
4730-00-639-9866AS5206-02 INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
4730-01-161-9557AS5206J05 INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
4730-01-293-6880AS5206J06 INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
AS5206J04 PRIMARY Sae International Dba Sae International (USA)
AS4841 Society of Automotive Engineers Inc (USA)
AS5206J04 Society of Automotive Engineers Inc (USA)
AS4841 Sae International Dba Sae International (USA)
AS5206 Sae International Dba Sae International (USA)
AN817-4C Aeronautical Standards Group Dept of Navy and Air Force (USA)
AN817-4J Aeronautical Standards Group Dept of Navy and Air Force (USA)
AS5206 Society of Automotive Engineers Inc (USA)
SAE-AS4841 Sae International Dba Sae International (USA)
Related Parts
4730-00-203-7261INTERCHANGEABLE
NUT,TUBE COUPLING
AS5206-12
4730-00-433-3191INTERCHANGEABLE
NUT,TUBE COUPLING
AS5206W10
4730-00-433-3192INTERCHANGEABLE
NUT,TUBE COUPLING
AS5206W12
4730-00-639-9866INTERCHANGEABLE
NUT,TUBE COUPLING
AS5206-02
4730-01-161-9557INTERCHANGEABLE
NUT,TUBE COUPLING
AS5206J05
4730-01-293-6880INTERCHANGEABLE
NUT,TUBE COUPLING
AS5206J06

Frequently Asked Questions

What is NSN 4730-01-178-6465?

NSN 4730-01-178-6465 is a Nut,tube Coupling, manufactured by Sae International Dba Sae International, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-01-178-6465?

NSN 4730-01-178-6465 has 9 cross-referenced part numbers: AS5206J04 (Sae International Dba Sae International), AS4841 (Society of Automotive Engineers Inc), AS5206J04 (Society of Automotive Engineers Inc), AS4841 (Sae International Dba Sae International), AS5206 (Sae International Dba Sae International) and 4 more.

What NSN replaces 4730-01-178-6465?

There are 6 known substitutes for 4730-01-178-6465: 4730-00-203-7261, 4730-00-433-3191, 4730-00-433-3192 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS5206J04?

Key specifications for AS5206J04: Width Across Flats: 0.563 INCHES NOMINAL IN; Fabrication Method: MACHINED; Thread Series: UNF; Smallest Inside Diameter: 0.255 INCHES MINIMUM AND 0.258 INCHES MAXIMUM IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-01-178-6465 still in active supply?

NSN 4730-01-178-6465 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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