PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-4721-20Adapter,straight,tube to Hose

Hydrasearch Company, Llc · NSN 4730-00-034-5024 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-034-5024 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-034-5024. Primary manufacturer part number: 4-4721-20.
Features
  • Adapter,straight,tube to Hose — FSC 4730
  • Nominal Outside Diameter Hose Accommodated: 2.000 INCHES SECOND END IN
  • Nominal Overall Length: 5.090 INCHES IN
  • Material Document and Classification: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Furnished Items and Quantity: 1 SOCKET
  • Material: NICKEL ALLOY A OVERALL
  • Nominal Outside Diameter Tube Accommodated: 1.250 INCHES FIRST END IN
  • Thread Quantity Per Inch: 12 FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Nickel Alloy a Overall construction
General Description

The Adapter,straight,tube to Hose, cataloged under National Stock Number 4730-00-034-5024, 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 Hydrasearch Company, Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-034-5024
Primary Part Number4-4721-20
Item NameAdapter,straight,tube to Hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerHydrasearch Company, Llc
StatusCANCELLED
Nominal Outside Diameter Hose Accommodated2.000 INCHES SECOND END IN
Nominal Overall Length5.090 INCHES IN
Material Document and ClassificationQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Furnished Items and Quantity1 SOCKET
MaterialNICKEL ALLOY A OVERALL
Nominal Outside Diameter Tube Accommodated1.250 INCHES FIRST END IN
Thread Quantity Per Inch12 FIRST END
Seat Angle37.0 DEGREES FIRST END
Thread Series DesignatorUN FIRST END
Nominal Thread Size1.625 INCHES FIRST END IN
Nominal Inside Diameter Hose Accommodated1.250 INCHES SECOND END IN
Thread Class2B FIRST END
Connection StyleGRIPPING NIPPLE (NOSE) SECOND END
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4730-00-547-0953282-4900-801823REVHPCF247FITTING INTERCHANGEABLE
Adapter,straight,tube to Hose
Naval Ship Systems Command
4730-00-834-1858 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-01-340-5810 INTERCHANGEABLE
Adapter,straight,tube to Hose
4730-01-353-28964-4721-32 INTERCHANGEABLE
Adapter,straight,tube to Hose
Hydrasearch Company, Llc
4730-01-354-530230233-16-16B6 INTERCHANGEABLE
Adapter,straight,tube to Hose
Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division
4730-01-398-66254-4721-12 INTERCHANGEABLE
Adapter,straight,tube to Hose
Hydrasearch Company, Llc
Cross-Reference Index
Part NumberManufacturer
AH40750-20-20M Ssp Fittings Corp (USA)
4-4721-20 Amz Alabama Inc. (USA)
20630-20-20M Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
20630-20-20NA Parker-Hannifin Corporation Dba Pneutronics Div Hose Products Division (USA)
20630-20-20NA Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
MIL-H-24135 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-24787/2 GR I TY A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-24787 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
4-4721-20 PRIMARY Hydrasearch Company, Llc (USA)
4-4721-20 Danfoss Power Solutions II, Llc (USA)
4-4721-20 Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA)
CMC-4-5502-20-20 Custom Hydraulic & Machine, Inc. Dba Custom Hydraulic & Machine Inc (USA)
Related Parts
4730-00-547-0953INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
282-4900-801823REVHPCF247FITTING
4730-00-834-1858INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-01-340-5810INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4730-01-353-2896INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4-4721-32
4730-01-354-5302INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
30233-16-16B6
4730-01-398-6625INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
4-4721-12

Frequently Asked Questions

What is NSN 4730-00-034-5024?

NSN 4730-00-034-5024 is a Adapter,straight,tube to Hose, manufactured by Hydrasearch Company, Llc, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-034-5024?

NSN 4730-00-034-5024 has 12 cross-referenced part numbers: AH40750-20-20M (Ssp Fittings Corp), 4-4721-20 (Amz Alabama Inc.), 20630-20-20M (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division), 20630-20-20NA (Parker-Hannifin Corporation Dba Pneutronics Div Hose Products Division), 20630-20-20NA (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division) and 7 more.

What NSN replaces 4730-00-034-5024?

There are 6 known substitutes for 4730-00-034-5024: 4730-00-547-0953, 4730-00-834-1858, 4730-01-340-5810 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-4721-20?

Key specifications for 4-4721-20: Nominal Outside Diameter Hose Accommodated: 2.000 INCHES SECOND END IN; Nominal Overall Length: 5.090 INCHES IN; Material Document and Classification: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Furnished Items and Quantity: 1 SOCKET. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-034-5024 still in active supply?

NSN 4730-00-034-5024 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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