PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5520K286Adapter,straight,pipe to Tube

Mcmaster-Carr Supply Co · NSN 4730-01-283-4939 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-283-4939 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-283-4939. Primary manufacturer part number: 5520K286.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Connection Type: THREADED INTERNAL TUBE FIRST END
  • Connection Style: PLAIN (PIPE) SECOND END
  • Nominal Thread Size: 0.375 INCHES SECOND END IN
  • Material: COPPER ALLOY OVERALL
  • Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN
  • Thread Series Designator: NPT SECOND END
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-01-283-4939, 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 Mcmaster-Carr Supply Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-283-4939
Primary Part Number5520K286
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMcmaster-Carr Supply Co
StatusACTIVE
Connection TypeTHREADED INTERNAL TUBE FIRST END
Connection StylePLAIN (PIPE) SECOND END
Nominal Thread Size0.375 INCHES SECOND END IN
MaterialCOPPER ALLOY OVERALL
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Thread Series DesignatorNPT SECOND END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-00-278-4322 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Cross-Reference Index
Part NumberManufacturer
5520K286 PRIMARY Mcmaster-Carr Supply Co (USA)
5090K24 Mcmaster-Carr Supply Co (USA)
Related Parts
4730-00-278-4322INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE

Frequently Asked Questions

What is NSN 4730-01-283-4939?

NSN 4730-01-283-4939 is a Adapter,straight,pipe to Tube, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-283-4939?

NSN 4730-01-283-4939 has 2 cross-referenced part numbers: 5520K286 (Mcmaster-Carr Supply Co), 5090K24 (Mcmaster-Carr Supply Co).

What NSN replaces 4730-01-283-4939?

There is 1 known substitute for 4730-01-283-4939: 4730-00-278-4322. Verify interchangeability with system specifications before substitution.

What are the specifications of 5520K286?

Key specifications for 5520K286: Connection Type: THREADED INTERNAL TUBE FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Nominal Thread Size: 0.375 INCHES SECOND END IN; Material: COPPER ALLOY OVERALL. 7 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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