PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27404-2DAdapter,straight,tube to Hose

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-278-5689 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-278-5689 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-278-5689. Primary manufacturer part number: MS27404-2D.
Features
  • Adapter,straight,tube to Hose — FSC 4730
  • Nominal Overall Length: 1.484 INCHES IN
  • Material Document and Classification: QQ-A-225/4T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6,T6 OR T851 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/9,T73 FED SPEC 3RD MATERIAL RESPONSE OVERALL
  • Surface Treatment: ANODIZE OVERALL
  • Nominal Thread Size: 0.312 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.125 INCHES FIRST END IN
  • Media for Which Designed: OXYGEN, GASEOUS SECOND RESPONSE
  • Connection Style: GRIPPING NIPPLE (NOSE) SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy 2014 or Aluminum Alloy 2024 or Aluminum Alloy 7075 Overall construction
General Description

The Adapter,straight,tube to Hose, cataloged under National Stock Number 4730-00-278-5689, 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 22 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-278-5689
Primary Part NumberMS27404-2D
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 Overall Length1.484 INCHES IN
Material Document and ClassificationQQ-A-225/4T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6,T6 OR T851 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/9,T73 FED SPEC 3RD MATERIAL RESPONSE OVERALL
Surface TreatmentANODIZE OVERALL
Nominal Thread Size0.312 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.125 INCHES FIRST END IN
Media for Which DesignedOXYGEN, GASEOUS SECOND RESPONSE
Connection StyleGRIPPING NIPPLE (NOSE) SECOND END
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
MaterialALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 7075 OVERALL
Surface Treatment Document and ClassificationMIL-A-8625,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Maximum Operating Temp225.0 FAHRENHEIT FIRST RESPONSE DEGF
Connection TypeTHREADED INTERNAL TUBE FIRST END
Nominal Outside Diameter Hose Accommodated0.344 INCHES SECOND END IN
Maximum Operating Temp-65.0 FAHRENHEIT SECOND RESPONSE DEGF
Thread Class3B FIRST END
Furnished Items and Quantity1 HOSE SOCKET
Operating Pressure1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Seat Angle37.0 DEGREES FIRST END
Connection TypeTHREADED EXTERNAL HOSE GRIPPING SECOND END
Thread Series DesignatorUNF FIRST END
Nominal Inside Diameter Hose Accommodated0.125 INCHES SECOND END IN
Media for Which DesignedHYDRAULIC FLUID FIRST RESPONSE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4730-00-278-5686 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-00-278-5688 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-00-289-2824 INTERCHANGEABLE
Adapter,straight,tube to Hose
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
Cross-Reference Index
Part NumberManufacturer
MS27404-2D Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-38726 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AN773-2 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
4730-00-278-5686INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-00-278-5688INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-00-289-2824INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
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

Frequently Asked Questions

What is NSN 4730-00-278-5689?

NSN 4730-00-278-5689 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 4730-00-278-5689?

NSN 4730-00-278-5689 has 3 cross-referenced part numbers: MS27404-2D (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-38726 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AN773-2 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 4730-00-278-5689?

There are 6 known substitutes for 4730-00-278-5689: 4730-00-278-5686, 4730-00-278-5688, 4730-00-289-2824 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27404-2D?

Key specifications for MS27404-2D: Nominal Overall Length: 1.484 INCHES IN; Material Document and Classification: QQ-A-225/4T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6,T6 OR T851 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/9,T73 FED SPEC 3RD MATERIAL RESPONSE OVERALL; Surface Treatment: ANODIZE OVERALL; Nominal Thread Size: 0.312 INCHES FIRST END IN. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-278-5689 still in active supply?

NSN 4730-00-278-5689 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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