PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-26521Hose Assembly,nonmetallic

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4720-00-088-4492 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-088-4492 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-088-4492. Primary manufacturer part number: MIL-DTL-26521.
Features
  • Hose Assembly,nonmetallic — FSC 4720
  • Flange Thickness: 1.000 INCHES NOMINAL FIRST END IN
  • Bolt Hole Diameter: 0.812 INCHES NOMINAL FIRST END IN
  • Burst Test Pressure: 400.0 POUNDS PER SQUARE INCH LBS
  • Flange Style: ROUND W / BOLT HOLES FIRST END
  • Outside Diameter: 6.688 INCHES NOMINAL IN
  • Connection Style: PLAIN FIRST END
  • Flange Outside Diameter: 11.000 INCHES NOMINAL FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-00-088-4492, 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 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4720-00-088-4492
Primary Part NumberMIL-DTL-26521
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
StatusACTIVE
Flange Thickness1.000 INCHES NOMINAL FIRST END IN
Bolt Hole Diameter0.812 INCHES NOMINAL FIRST END IN
Burst Test Pressure400.0 POUNDS PER SQUARE INCH LBS
Flange StyleROUND W / BOLT HOLES FIRST END
Outside Diameter6.688 INCHES NOMINAL IN
Connection StylePLAIN FIRST END
Flange Outside Diameter11.000 INCHES NOMINAL FIRST END IN
End Flange ConstructionSOLID FIRST END
Specification/standard Data81349-MIL-H-26521 GOVERNMENT SPECIFICATION
Operating Pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
Outer Covering Environmental ProtectionFUEL RESISTANT AND MILDEW RESISTANT AND OIL RESISTANT
Connection TypePLAIN FACE FLANGE FIRST END
Hydrostatic Test Pressure175.0 POUNDS PER SQUARE INCH LBS
Inside Surface ConditionSMOOTH
Bolt Circle Diameter9.500 INCHES NOMINAL FIRST END IN
Layer Composition and LocationOUTER LAYER MOLDED RUBBER AND 1ST LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD
Cross-Sectional Shape StyleROUND
Inside Diameter6.000 INCHES NOMINAL IN
Measuring Method and Length600.000 INCHES NOMINAL OVERALL IN
Bolt Hole Quantity8 FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4720-00-088-3053 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-611-9581 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-720-3847 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-00-802-5828 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
MIL-DTL-26521 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
MIL-H-27508 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
4720-00-611-9581INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-720-3847INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-00-802-5828INTERCHANGEABLE
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 4720-00-088-4492?

NSN 4720-00-088-4492 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: active.

What are the part numbers for NSN 4720-00-088-4492?

NSN 4720-00-088-4492 has 3 cross-referenced part numbers: MIL-DTL-26521 (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), MIL-H-27508 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4720-00-088-4492?

There are 12 known substitutes for 4720-00-088-4492: 4720-00-088-3053, 4720-00-611-9581, 4720-00-720-3847 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-26521?

Key specifications for MIL-DTL-26521: Flange Thickness: 1.000 INCHES NOMINAL FIRST END IN; Bolt Hole Diameter: 0.812 INCHES NOMINAL FIRST END IN; Burst Test Pressure: 400.0 POUNDS PER SQUARE INCH LBS; Flange Style: ROUND W / BOLT HOLES FIRST END. 21 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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