PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

531-6985695-F281Hose Assembly,nonmetallic

Naval Sea Systems Command · NSN 4720-01-501-7173 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-01-501-7173 — this item is cataloged by the U.S. Government under National Stock Number 4720-01-501-7173. Primary manufacturer part number: 531-6985695-F281.
Features
  • Hose Assembly,nonmetallic — FSC 4720
  • Specification/standard Data: 81349/MIL-H-24136/3 GOVERNMENT SPECIFICATION
  • Inside Surface Condition: SMOOTH
  • Minimum Inside Bending Radius: 13.250 INCHES IN
  • Measuring Method and Length: 15.555 INCHES NOMINAL EXCLUDING END FITTINGS IN
  • Nondefinitive Spec/std Data: 32 SIZE
  • Outside Diameter: 2.220 INCHES NOMINAL IN
  • Burst Test Pressure: 1400.0 POUNDS PER SQUARE INCH LBS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-501-7173, 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 Naval Sea Systems Command. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4720-01-501-7173
Primary Part Number531-6985695-F281
Item NameHose Assembly,nonmetallic
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusACTIVE
Specification/standard Data81349/MIL-H-24136/3 GOVERNMENT SPECIFICATION
Inside Surface ConditionSMOOTH
Minimum Inside Bending Radius13.250 INCHES IN
Measuring Method and Length15.555 INCHES NOMINAL EXCLUDING END FITTINGS IN
Nondefinitive Spec/std Data32 SIZE
Outside Diameter2.220 INCHES NOMINAL IN
Burst Test Pressure1400.0 POUNDS PER SQUARE INCH LBS
Temp Rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
Inside Diameter1.810 INCHES NOMINAL IN
Cross-Sectional Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4720-00-177-1721 INTERCHANGEABLE
Hose,nonmetallic
4730-01-501-5074531-6985694-F202-1 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Naval Sea Systems Command
4720-01-501-546848-00-3573MRA INTERCHANGEABLE
Hose,nonmetallic
Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-501-5471AE38112-2432 INTERCHANGEABLE
Elbow,hose
Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-501-7840AE38113-2424 INTERCHANGEABLE
Clamp,hose
Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
Part NumberManufacturer
531-6985695-F281 PRIMARY Naval Sea Systems Command (USA)
MIL-DTL-24136/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M24136/3-32 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
H655-1503-F281 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
MIL-H-24136/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
531-6985695 Naval Sea Systems Command (USA)
Related Parts
4720-00-177-1721INTERCHANGEABLE
HOSE,NONMETALLIC
4730-01-501-5074INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
531-6985694-F202-1
4720-01-501-5468INTERCHANGEABLE
HOSE,NONMETALLIC
48-00-3573MRA
4730-01-501-5471INTERCHANGEABLE
ELBOW,HOSE
AE38112-2432
4730-01-501-7840INTERCHANGEABLE
CLAMP,HOSE
AE38113-2424

Frequently Asked Questions

What is NSN 4720-01-501-7173?

NSN 4720-01-501-7173 is a Hose Assembly,nonmetallic, manufactured by Naval Sea Systems Command, classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-01-501-7173?

NSN 4720-01-501-7173 has 6 cross-referenced part numbers: 531-6985695-F281 (Naval Sea Systems Command), MIL-DTL-24136/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M24136/3-32 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), H655-1503-F281 (Electric Boat Corporation Div General Dynamics Electric Boat), MIL-H-24136/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 4720-01-501-7173?

There are 5 known substitutes for 4720-01-501-7173: 4720-00-177-1721, 4730-01-501-5074, 4720-01-501-5468 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 531-6985695-F281?

Key specifications for 531-6985695-F281: Special Features: ASSEMBLY CONSIST OF PN: F281-1 HOSE, PN: F281-2 FITTING STR END, - 32 HOSE X 3.062-12UN, 81349/MIL-H-24136/3 TY-1 81349/MIL-H-24136 96169/EB-3461; PN F281-3 ELBOW 90, -32 HOSE X 3.062-12, 32142/90EF-H1488CL 2432; Specification/standard Data: 81349/MIL-H-24136/3 GOVERNMENT SPECIFICATION; Inside Surface Condition: SMOOTH; Minimum Inside Bending Radius: 13.250 INCHES IN. 12 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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