PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

531-6985694-F263-3Adapter,straight,pipe to Tube

Naval Sea Systems Command · NSN 4730-01-501-5461 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-501-5461 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-501-5461. Primary manufacturer part number: 531-6985694-F263-3.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SOCKET
  • Seat Angle: 37.0 DEGREES FIRST END
  • Nondefinitive Spec/std Data: 24 SIZE
  • Specification/standard Data: 81349-MIL-H-24136/2 GOVERNMENT SPECIFICATION
  • Connection Type: THREADED INTERNAL TUBE FIRST END
  • Media for Which Designed: WATER, SALT SINGLE RESPONSE
  • Connection Style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Nickel Alloy and Copper Alloy Socket construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-01-501-5461, 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 Naval Sea Systems Command. Government technical data includes 11 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-501-5461
Primary Part Number531-6985694-F263-3
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusACTIVE
Material Document and ClassificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SOCKET
Seat Angle37.0 DEGREES FIRST END
Nondefinitive Spec/std Data24 SIZE
Specification/standard Data81349-MIL-H-24136/2 GOVERNMENT SPECIFICATION
Connection TypeTHREADED INTERNAL TUBE FIRST END
Media for Which DesignedWATER, SALT SINGLE RESPONSE
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Nominal Thread Size3.062 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated1.500 INCHES FIRST END IN
MaterialNICKEL ALLOY AND COPPER ALLOY SOCKET
Thread Series DesignatorNPSH FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4720-00-080-4203 INTERCHANGEABLE
Hose,nonmetallic
4720-00-167-4725 INTERCHANGEABLE
Hose,nonmetallic
4720-00-167-4726 INTERCHANGEABLE
Hose,nonmetallic
4720-00-168-3444 INTERCHANGEABLE
Hose,nonmetallic
4720-01-019-8976 INTERCHANGEABLE
Hose,nonmetallic
4720-01-021-1586 INTERCHANGEABLE
Hose,nonmetallic
4720-01-021-5663 INTERCHANGEABLE
Hose,nonmetallic
4730-01-122-1005FC7183-2424-4 INTERCHANGEABLE
Elbow,hose
Danfoss Power Solutions II, Llc
4730-01-501-5017531-6985694-F7 INTERCHANGEABLE
Plate,orifice,fluid
Naval Sea Systems Command
4730-01-501-5019531-6985694-F24 INTERCHANGEABLE
Restrictor Unit,fluid Flow
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
MIL-H-24136/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-24136/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
H655-1502-F263-3 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
531-6985694 Naval Sea Systems Command (USA)
M24136/2-24 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
531-6985694-F263-3 PRIMARY Naval Sea Systems Command (USA)
Related Parts
4720-00-080-4203INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-167-4725INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-167-4726INTERCHANGEABLE
HOSE,NONMETALLIC
4720-00-168-3444INTERCHANGEABLE
HOSE,NONMETALLIC
4720-01-019-8976INTERCHANGEABLE
HOSE,NONMETALLIC
4720-01-021-1586INTERCHANGEABLE
HOSE,NONMETALLIC
4720-01-021-5663INTERCHANGEABLE
HOSE,NONMETALLIC
4730-01-122-1005INTERCHANGEABLE
ELBOW,HOSE
FC7183-2424-4
4730-01-501-5017INTERCHANGEABLE
PLATE,ORIFICE,FLUID
531-6985694-F7
4730-01-501-5019INTERCHANGEABLE
RESTRICTOR UNIT,FLUID FLOW
531-6985694-F24
4730-01-501-5027INTERCHANGEABLE
RESTRICTOR UNIT,FLUID FLOW
531-6985694-F23
4720-01-501-5068INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
531-6985694-F202

Frequently Asked Questions

What is NSN 4730-01-501-5461?

NSN 4730-01-501-5461 is a Adapter,straight,pipe to Tube, manufactured by Naval Sea Systems Command, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-501-5461?

NSN 4730-01-501-5461 has 6 cross-referenced part numbers: MIL-H-24136/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-24136/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), H655-1502-F263-3 (Electric Boat Corporation Div General Dynamics Electric Boat), 531-6985694 (Naval Sea Systems Command), M24136/2-24 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 4730-01-501-5461?

There are 12 known substitutes for 4730-01-501-5461: 4720-00-080-4203, 4720-00-167-4725, 4720-00-167-4726 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 531-6985694-F263-3?

Key specifications for 531-6985694-F263-3: Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SOCKET; Part Name Assigned by Controlling Agency: FITTING, STRAIGHT END; Seat Angle: 37.0 DEGREES FIRST END; End Item Identification: R.O UNIT, PORT; WSD LOS ANGELES CLASS SSN (688). 14 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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