PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

390509-4Coupling Half,quick Disconnect

Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution · NSN 4730-01-038-2351 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-038-2351 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-038-2351. Primary manufacturer part number: 390509-4.
Features
  • Coupling Half,quick Disconnect — FSC 4730
  • Seat Angle: 37.0 DEGREES
  • Quick Disconnect Method: PUSH-PULL ALL ENDS
  • Connection Style: FLARED ALL ENDS
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES ALL ENDS IN
  • Nominal Thread Size: 0.438 INCHES ALL ENDS IN
  • Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
  • Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
Applications
  • Applications requiring Aluminum Alloy Body construction
General Description

The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-038-2351, 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 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN4730-01-038-2351
Primary Part Number390509-4
Item NameCoupling Half,quick Disconnect
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerEaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
StatusACTIVE
Seat Angle37.0 DEGREES
Quick Disconnect MethodPUSH-PULL ALL ENDS
Connection StyleFLARED ALL ENDS
Nominal Outside Diameter Tube Accommodated0.250 INCHES ALL ENDS IN
Nominal Thread Size0.438 INCHES ALL ENDS IN
Connection TypeTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
Style DesignatorMALE COUPLING HALF
Leg Length0.550 INCHES NOMINAL IN
MaterialALUMINUM ALLOY BODY
Connection TypeINTERNAL QUICK DISCONNECT ALL ENDS
Thread Class3A ALL ENDS A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5910-01-128-1412 INTERCHANGEABLE
Capacitor,fixed,electrolytic
5360-01-282-2158 INTERCHANGEABLE
Spring,helical,compression
Cross-Reference Index
Part NumberManufacturer
390509-4 PRIMARY Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
C6529 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
390509-4 Aeroquip Corp Industrial Div Marshall Plant (USA)
Related Parts
5910-01-128-1412INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
5360-01-282-2158INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION

Frequently Asked Questions

What is NSN 4730-01-038-2351?

NSN 4730-01-038-2351 is a Coupling Half,quick Disconnect, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-038-2351?

NSN 4730-01-038-2351 has 3 cross-referenced part numbers: 390509-4 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), C6529 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 390509-4 (Aeroquip Corp Industrial Div Marshall Plant).

What NSN replaces 4730-01-038-2351?

There are 2 known substitutes for 4730-01-038-2351: 5910-01-128-1412, 5360-01-282-2158. Verify interchangeability with system specifications before substitution.

What are the specifications of 390509-4?

Key specifications for 390509-4: Seat Angle: 37.0 DEGREES; Quick Disconnect Method: PUSH-PULL ALL ENDS; Connection Style: FLARED ALL ENDS; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES ALL ENDS IN. 13 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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