PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

471-3DAdapter,straight,tube to Hose

Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution · NSN 4730-00-278-5688 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-278-5688 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-278-5688. Primary manufacturer part number: 471-3D.
Features
  • Adapter,straight,tube to Hose — FSC 4730
  • Thread Series Designator: UNF FIRST END
  • Surface Treatment: ANODIZE OVERALL
  • Seat Angle: 37.0 DEGREES FIRST END
  • Material: ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 7075 OVERALL
  • Nominal Outside Diameter Tube Accommodated: 0.188 INCHES FIRST END IN
  • Nominal Thread Size: 0.375 INCHES FIRST END IN
  • Furnished Items and Quantity: 1 HOSE COUPLING NUT
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 4730-00-278-5688, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-278-5688
Primary Part Number471-3D
Item NameAdapter,straight,tube to Hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerEaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
StatusCANCELLED
Thread Series DesignatorUNF FIRST END
Surface TreatmentANODIZE OVERALL
Seat Angle37.0 DEGREES FIRST END
MaterialALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 7075 OVERALL
Nominal Outside Diameter Tube Accommodated0.188 INCHES FIRST END IN
Nominal Thread Size0.375 INCHES FIRST END IN
Furnished Items and Quantity1 HOSE COUPLING NUT
Nominal Inside Diameter Hose Accommodated0.188 INCHES SECOND END IN
Nominal Outside Diameter Hose Accommodated0.406 INCHES SECOND END IN
Connection TypeTHREADED INTERNAL TUBE FIRST END
Connection StyleGRIPPING NIPPLE (NOSE) SECOND END
Specification/standard Data96906-MS27404 GOVERNMENT STANDARD
Connection TypeTHREADED EXTERNAL HOSE GRIPPING SECOND END
Surface Treatment Document and ClassificationMIL-A-3625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Thread Class3B FIRST END
Nominal Overall Length1.531 INCHES IN
Operating Pressure250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3455-00-275-1942 INTERCHANGEABLE
Cutter,milling,end
4730-00-278-5686 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
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
5365-00-708-5693056703 INTERCHANGEABLE
Shim
Eaton Aerospace, Llc Dba Jackson South
4720-01-242-6353 INTERCHANGEABLE
Hose Assembly,nonmetallic
3040-01-461-5128 INTERCHANGEABLE
Collar,shaft
Cross-Reference Index
Part NumberManufacturer
471-3D Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
56703 Dana Corp Weatherhead Div (USA)
MS27404D-3 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27404-3D Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27404-3D Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
MIL-DTL-38726 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AN773-3 Aeronautical Standards Group Dept of Navy and Air Force (USA)
MS27404-3D Hydro-Fitting Manufacturing Corporation (USA)
6MS27404-3P Gould-Johnson Research Associates Ltd (USA)
Related Parts
3455-00-275-1942INTERCHANGEABLE
CUTTER,MILLING,END
4730-00-278-5686INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-00-278-5689INTERCHANGEABLE
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
5365-00-708-5693INTERCHANGEABLE
SHIM
056703
4720-01-242-6353INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
3040-01-461-5128INTERCHANGEABLE
COLLAR,SHAFT
3040-01-462-9002INTERCHANGEABLE
COLLAR,SHAFT
8M0034918
2990-01-688-2657INTERCHANGEABLE
PULLEY,SPECIAL
56703

Frequently Asked Questions

What is NSN 4730-00-278-5688?

NSN 4730-00-278-5688 is a Adapter,straight,tube to Hose, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-278-5688?

NSN 4730-00-278-5688 has 9 cross-referenced part numbers: 471-3D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 56703 (Dana Corp Weatherhead Div), MS27404D-3 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS27404-3D (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS27404-3D (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution) and 4 more.

What NSN replaces 4730-00-278-5688?

There are 12 known substitutes for 4730-00-278-5688: 3455-00-275-1942, 4730-00-278-5686, 4730-00-278-5689 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 471-3D?

Key specifications for 471-3D: Thread Series Designator: UNF FIRST END; Surface Treatment: ANODIZE OVERALL; Seat Angle: 37.0 DEGREES FIRST END; Material: ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 7075 OVERALL. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-278-5688 still in active supply?

NSN 4730-00-278-5688 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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