PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56704Adapter,straight,tube to Hose

Dana Corp Weatherhead Div · NSN 4730-00-497-4281 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-497-4281 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-497-4281. Primary manufacturer part number: 56704.
Features
  • Adapter,straight,tube to Hose — FSC 4730
  • Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Surface Treatment: ANODIZE OVERALL
  • Specification/standard Data: 96906-MS27404 GOVERNMENT STANDARD
  • Thread Series Designator: UNF FIRST END
  • Thread Class: 3B FIRST END3B FIRST END
  • Material: ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 7075 OVERALL
  • Furnished Items and Quantity: 1 HOSE COUPLING NUT
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy 2024 or Aluminum Alloy 7075 Overall construction
General Description

The Adapter,straight,tube to Hose, cataloged under National Stock Number 4730-00-497-4281, 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 Dana Corp Weatherhead Div. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-497-4281
Primary Part Number56704
Item NameAdapter,straight,tube to Hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerDana Corp Weatherhead Div
StatusCANCELLED
Operating Pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Surface TreatmentANODIZE OVERALL
Specification/standard Data96906-MS27404 GOVERNMENT STANDARD
Thread Series DesignatorUNF FIRST END
Thread Class3B FIRST END3B FIRST END
MaterialALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 7075 OVERALL
Furnished Items and Quantity1 HOSE COUPLING NUT
Connection StyleGRIPPING NIPPLE (NOSE) SECOND ENDGRIPPING NIPPLE (NOSE) SECOND END
Material Document and ClassificationQQ-A-225/6,T851 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/9,T73 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Nominal Outside Diameter Hose Accommodated0.469 INCHES SECOND END IN
Connection TypeTHREADED INTERNAL TUBE FIRST ENDTHREADED INTERNAL TUBE FIRST END
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Connection TypeTHREADED EXTERNAL HOSE GRIPPING SECOND ENDTHREADED EXTERNAL HOSE GRIPPING SECOND END
Nominal Thread Size0.438 INCHES FIRST END0.438 INCHES FIRST END IN
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST ENDSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Nominal Overall Length1.594 INCHES IN
Nominal Inside Diameter Hose Accommodated0.250 INCHES SECOND END IN
Seat Angle37.0 DEGREES FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4730-00-278-5686 INTERCHANGEABLE
Adapter,straight,tube to Hose
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
4730-00-423-0080 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-00-497-4284 INTERCHANGEABLE
Adapter,straight,tube to Hose
2815-01-688-271456704 INTERCHANGEABLE
Speed Sensor,diesel Engine
Westerbeke Corporation
Cross-Reference Index
Part NumberManufacturer
56704 Dana Corp Weatherhead Div (USA)
AN773-4 Aeronautical Standards Group Dept of Navy and Air Force (USA)
471-4D Danfoss Power Solutions II, Llc (USA)
4730PL1373242 Jednolity Indeks Materialowy - Uniform Material Index (POL)
7351007 Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA)
MS27404-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27404-4D Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
471-4D Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
MS27404-4W Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
7351007 Spalla Inc (USA)
MS27404D-4 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
Related Parts
4730-00-278-5686INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
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
4730-00-423-0080INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-00-497-4284INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
2815-01-688-2714INTERCHANGEABLE
SPEED SENSOR,DIESEL ENGINE
56704

Frequently Asked Questions

What is NSN 4730-00-497-4281?

NSN 4730-00-497-4281 is a Adapter,straight,tube to Hose, manufactured by Dana Corp Weatherhead Div, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-497-4281?

NSN 4730-00-497-4281 has 12 cross-referenced part numbers: 56704 (Dana Corp Weatherhead Div), AN773-4 (Aeronautical Standards Group Dept of Navy and Air Force), 471-4D (Danfoss Power Solutions II, Llc), 4730PL1373242 (Jednolity Indeks Materialowy - Uniform Material Index), 7351007 (Army, United States Department of the Dba Rock Island Arsenal Jmtc) and 7 more.

What NSN replaces 4730-00-497-4281?

There are 7 known substitutes for 4730-00-497-4281: 4730-00-278-5686, 4730-00-278-5688, 4730-00-278-5689 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 56704?

Key specifications for 56704: Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Surface Treatment: ANODIZE OVERALL; Specification/standard Data: 96906-MS27404 GOVERNMENT STANDARD; Thread Series Designator: UNF FIRST END. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-497-4281 still in active supply?

NSN 4730-00-497-4281 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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