PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27404-6Adapter,straight,tube to Hose

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-278-5686 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-278-5686 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-278-5686. Primary manufacturer part number: MS27404-6.
Features
  • Adapter,straight,tube to Hose — FSC 4730
  • Nominal Inside Diameter Hose Accommodated: 0.435 INCHES SECOND END IN
  • Furnished Items and Quantity: 1 HOSE COUPLING NUT
  • Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN
  • Material Document and Classification: QQ-A-225/5,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Nominal Overall Length: 2.000 INCHES IN
  • Nominal Thread Size: 0.562 INCHES FIRST END IN
  • Thread Series Designator: UNF FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy 2017 Overall construction
General Description

The Adapter,straight,tube to Hose, cataloged under National Stock Number 4730-00-278-5686, 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 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-278-5686
Primary Part NumberMS27404-6
Item NameAdapter,straight,tube to Hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Nominal Inside Diameter Hose Accommodated0.435 INCHES SECOND END IN
Furnished Items and Quantity1 HOSE COUPLING NUT
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Material Document and ClassificationQQ-A-225/5,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Overall Length2.000 INCHES IN
Nominal Thread Size0.562 INCHES FIRST END IN
Thread Series DesignatorUNF FIRST END
Media for Which DesignedHYDRAULIC FLUID SINGLE RESPONSE
Thread Class3B FIRST END
Seat Angle37.0 DEGREES FIRST END
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Specification/standard Data96906-MS27404 GOVERNMENT STANDARD
Connection StyleGRIPPING NIPPLE (NOSE) SECOND END
Surface TreatmentANODIZE OVERALL
Connection TypeTHREADED EXTERNAL HOSE GRIPPING SECOND END
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Connection TypeTHREADED INTERNAL TUBE FIRST END
Surface Treatment Document and ClassificationMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MaterialALUMINUM ALLOY 2017 OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
4730-00-278-5688 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-00-278-5689 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-00-289-2824 INTERCHANGEABLE
Adapter,straight,tube to Hose
5340-00-409-984356806 INTERCHANGEABLE
Retainer,nut and Bolt
Eaton Aerospace, Llc Dba Jackson South
4730-00-423-0080 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-00-497-4281 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-00-497-4284 INTERCHANGEABLE
Adapter,straight,tube to Hose
6515-01-572-297356806 INTERCHANGEABLE
Sponge,vacuum
Reable Therapeutics Inc Dba Chattanooga Group
Cross-Reference Index
Part NumberManufacturer
MS27404-6 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
AN773-6 Aeronautical Standards Group Dept of Navy and Air Force (USA)
461-6D Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
56806 Dana Corp Weatherhead Div (USA)
MS27404-6D Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27404-6D Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
MS27404-6D Hydro-Fitting Manufacturing Corporation (USA)
MS27404-6D Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA)
147-27606 Dana Corp Weatherhead Div (USA)
MIL-DTL-38726 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
US107-3-6 United Supply Co Inc (USA)
MS27404-6D Danfoss Power Solutions II, Llc (USA)
4730PL1424426 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MS27404-6D Dana Corp Weatherhead Div (USA)
Related Parts
4730-00-278-5688INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-00-278-5689INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-00-289-2824INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
5340-00-409-9843INTERCHANGEABLE
RETAINER,NUT AND BOLT
56806
4730-00-423-0080INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-00-497-4281INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-00-497-4284INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
6515-01-572-2973INTERCHANGEABLE
SPONGE,VACUUM
56806

Frequently Asked Questions

What is NSN 4730-00-278-5686?

NSN 4730-00-278-5686 is a Adapter,straight,tube to Hose, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-278-5686?

NSN 4730-00-278-5686 has 14 cross-referenced part numbers: MS27404-6 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AN773-6 (Aeronautical Standards Group Dept of Navy and Air Force), 461-6D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 56806 (Dana Corp Weatherhead Div), MS27404-6D (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 9 more.

What NSN replaces 4730-00-278-5686?

There are 8 known substitutes for 4730-00-278-5686: 4730-00-278-5688, 4730-00-278-5689, 4730-00-289-2824 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27404-6?

Key specifications for MS27404-6: Nominal Inside Diameter Hose Accommodated: 0.435 INCHES SECOND END IN; Furnished Items and Quantity: 1 HOSE COUPLING NUT; Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN; Material Document and Classification: QQ-A-225/5,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-278-5686 still in active supply?

NSN 4730-00-278-5686 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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