PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M26521-4-420Hose Assembly,nonmetallic

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4720-00-802-5828 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-802-5828 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-802-5828. Primary manufacturer part number: M26521-4-420.
Features
  • Hose Assembly,nonmetallic — FSC 4720
  • Connection Style: PLAIN SECOND END
  • Thread Series Designator: NPT FIRST END
  • Nominal Thread Size: 4.000 INCHES FIRST END IN
  • Cross-Sectional Shape Style: ROUND
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Operating Pressure: 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
  • Media for Which Designed: FUEL/OIL, HYDROCARBON AND WATER, FRESH SINGLE RESPONSE
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-00-802-5828, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 4 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
NSN4720-00-802-5828
Primary Part NumberM26521-4-420
Item NameHose Assembly,nonmetallic
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Connection StylePLAIN SECOND END
Thread Series DesignatorNPT FIRST END
Nominal Thread Size4.000 INCHES FIRST END IN
Cross-Sectional Shape StyleROUND
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Operating Pressure175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
Media for Which DesignedFUEL/OIL, HYDROCARBON AND WATER, FRESH SINGLE RESPONSE
Inside Diameter4.000 INCHES NOMINAL IN
End Connection DesignSTRAIGHT SECOND END
Nominal Thread Size4.000 INCHES SECOND END IN
Specification/standard Data81349-MIL-H-26521 GOVERNMENT SPECIFICATION
Inside Surface ConditionSMOOTH
Measuring Method and Length420.000 INCHES NOMINAL WORKING IN
Thread Series DesignatorNPT SECOND END
Outside Diameter4.625 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND SECOND END
Connection StylePLAIN OPTIONAL END FIRST END
Connection TypeTHREADED INTERNAL PIPE FIRST END
Layer Composition and Location1ST LAYER WOVEN FABRIC AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE
Thread DirectionRIGHT-HAND FIRST END
End Connection DesignSTRAIGHT FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4720-00-088-3053 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-088-4492 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-611-9581 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-720-3847 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-803-9726 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-917-8373 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-974-1654 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-974-1690 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-974-1713 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-974-1714 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
M26521-4-420 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
N26521C40R3500 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-H-26521 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS21366C614200 Deltrol Corp Deltrol Controls Div (USA)
M26521C4.0R0420 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS21366C61350 Boston Industrial Products Inc Sub of Dana Corp (USA)
MS21366C61350 Danfoss Power Solutions II, Llc (USA)
MS21366C61350 Deltrol Corp Deltrol Controls Div (USA)
MIL-DTL-26521 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4720-00-088-3053INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-088-4492INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-611-9581INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-720-3847INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-803-9726INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-917-8373INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-974-1654INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-974-1690INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-974-1713INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-974-1714INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-999-7776INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-01-024-6375INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC

Frequently Asked Questions

What is NSN 4720-00-802-5828?

NSN 4720-00-802-5828 is a Hose Assembly,nonmetallic, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4720 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4720-00-802-5828?

NSN 4720-00-802-5828 has 9 cross-referenced part numbers: M26521-4-420 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), N26521C40R3500 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-H-26521 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS21366C614200 (Deltrol Corp Deltrol Controls Div), M26521C4.0R0420 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 4 more.

What NSN replaces 4720-00-802-5828?

There are 12 known substitutes for 4720-00-802-5828: 4720-00-088-3053, 4720-00-088-4492, 4720-00-611-9581 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M26521-4-420?

Key specifications for M26521-4-420: Connection Style: PLAIN SECOND END; Thread Series Designator: NPT FIRST END; Nominal Thread Size: 4.000 INCHES FIRST END IN; Cross-Sectional Shape Style: ROUND. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4720-00-802-5828 still in active supply?

NSN 4720-00-802-5828 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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