PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-H-8788Hose Assembly,nonmetallic

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4720-01-491-5684 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-01-491-5684 — this item is cataloged by the U.S. Government under National Stock Number 4720-01-491-5684. Primary manufacturer part number: MIL-H-8788.
Features
  • Hose Assembly,nonmetallic — FSC 4720
  • Burst Test Pressure: 14000.0 POUNDS PER SQUARE INCH LBS
  • Outside Diameter: 0.375 INCHES NOMINAL IN
  • Connection Type: THREADED INTERNAL TUBE FIRST END
  • End Connection Design: STRAIGHT FIRST END
  • Inside Diameter: 0.344 INCHES NOMINAL IN
  • Thread Class: 3B FIRST END
  • Connection Style: SWIVEL NUT FLARE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-491-5684, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4720-01-491-5684
Primary Part NumberMIL-H-8788
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
Burst Test Pressure14000.0 POUNDS PER SQUARE INCH LBS
Outside Diameter0.375 INCHES NOMINAL IN
Connection TypeTHREADED INTERNAL TUBE FIRST END
End Connection DesignSTRAIGHT FIRST END
Inside Diameter0.344 INCHES NOMINAL IN
Thread Class3B FIRST END
Connection StyleSWIVEL NUT FLARE FIRST END
Minimum Inside Bending Radius5.000 INCHES IN
Thread DirectionRIGHT-HAND FIRST END
Temp Rating-65.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
Measuring Method and Length59.000 INCHES NOMINAL WORKING IN
Seat Angle37.0 DEGREES FIRST END
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
Cross-Sectional Shape StyleROUND
Nominal Thread Size0.562 INCHES FIRST END IN
Hydrostatic Test Pressure7000.0 POUNDS PER SQUARE INCH LBS
Inside Surface ConditionSMOOTH
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4720-00-554-8084 INTERCHANGEABLE
Hose,nonmetallic
4720-00-554-8085 INTERCHANGEABLE
Hose,nonmetallic
4720-00-554-8086 INTERCHANGEABLE
Hose,nonmetallic
4720-00-554-8087 INTERCHANGEABLE
Hose,nonmetallic
4720-00-554-8088 INTERCHANGEABLE
Hose,nonmetallic
4720-00-554-8089 INTERCHANGEABLE
Hose,nonmetallic
4720-00-683-8830 INTERCHANGEABLE
Hose,nonmetallic
4720-01-347-8491 INTERCHANGEABLE
Hose Assembly,nonmetallic
4720-01-348-1503 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
MIL-H-8788 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS28759-G-0590 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS28759-60590 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-8790 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4720-00-554-8084INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-554-8085INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-554-8086INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-554-8087INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-554-8088INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-554-8089INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-683-8830INTERCHANGEABLE
HOSE,NONMETALLIC
4720-01-347-8491INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4720-01-348-1503INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC

Frequently Asked Questions

What is NSN 4720-01-491-5684?

NSN 4720-01-491-5684 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 4720-01-491-5684?

NSN 4720-01-491-5684 has 4 cross-referenced part numbers: MIL-H-8788 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS28759-G-0590 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS28759-60590 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-8790 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4720-01-491-5684?

There are 9 known substitutes for 4720-01-491-5684: 4720-00-554-8084, 4720-00-554-8085, 4720-00-554-8086 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-H-8788?

Key specifications for MIL-H-8788: Burst Test Pressure: 14000.0 POUNDS PER SQUARE INCH LBS; Outside Diameter: 0.375 INCHES NOMINAL IN; Connection Type: THREADED INTERNAL TUBE FIRST END; End Connection Design: STRAIGHT FIRST END. 19 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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