PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B-202-1Nut,tube Coupling

Swagelok Co · NSN 4730-01-061-1970 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-061-1970 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-061-1970. Primary manufacturer part number: B-202-1.
Features
  • Nut,tube Coupling — FSC 4730
  • Nominal Tube Outside Diameter: 0.125 INCHES IN
  • Width Across Flats: 0.438 INCHES NOMINAL IN
  • Material: COPPER ALLOY OVERALL
  • Nut Height: 0.469 INCHES NOMINAL IN
  • Fabrication Method: MACHINED
  • Nut Style: TUBE COUPLING
  • 1 verified cross-reference
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Nut,tube Coupling, cataloged under National Stock Number 4730-01-061-1970, 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 Swagelok Co. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-061-1970
Primary Part NumberB-202-1
Item NameNut,tube Coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSwagelok Co
StatusACTIVE
Nominal Tube Outside Diameter0.125 INCHES IN
Width Across Flats0.438 INCHES NOMINAL IN
MaterialCOPPER ALLOY OVERALL
Nut Height0.469 INCHES NOMINAL IN
Fabrication MethodMACHINED
Nut StyleTUBE COUPLING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5330-00-202-3665A314088 INTERCHANGEABLE
Gasket
Naval Ship Systems Command
3110-00-554-3459 INTERCHANGEABLE
Bearing,ball,annular
3120-00-813-7541 INTERCHANGEABLE
Bearing,sleeve
5325-01-044-3489B2021 INTERCHANGEABLE
Ring,retaining
Naval Inventory Control Point Mechanicsburg
5950-01-250-8466646-6782-001 INTERCHANGEABLE
Coil Assembly,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5325-01-370-2404 INTERCHANGEABLE
Ring,retaining
4820-01-407-4264B2021 INTERCHANGEABLE
Retainer,disk,valve
Dante Valve Company
7021-01-495-4686 INTERCHANGEABLE
Computer Subassembly
Cross-Reference Index
Part NumberManufacturer
B-202-1 PRIMARY Swagelok Co (USA)
Related Parts
5330-00-202-3665INTERCHANGEABLE
GASKET
A314088
3110-00-554-3459INTERCHANGEABLE
BEARING,BALL,ANNULAR
3120-00-813-7541INTERCHANGEABLE
BEARING,SLEEVE
5325-01-044-3489INTERCHANGEABLE
RING,RETAINING
B2021
5950-01-250-8466INTERCHANGEABLE
COIL ASSEMBLY,RADIO FREQUENCY
646-6782-001
5325-01-370-2404INTERCHANGEABLE
RING,RETAINING
4820-01-407-4264INTERCHANGEABLE
RETAINER,DISK,VALVE
B2021
7021-01-495-4686INTERCHANGEABLE
COMPUTER SUBASSEMBLY

Frequently Asked Questions

What is NSN 4730-01-061-1970?

NSN 4730-01-061-1970 is a Nut,tube Coupling, manufactured by Swagelok Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-061-1970?

NSN 4730-01-061-1970 has 1 cross-referenced part number: B-202-1 (Swagelok Co).

What NSN replaces 4730-01-061-1970?

There are 8 known substitutes for 4730-01-061-1970: 5330-00-202-3665, 3110-00-554-3459, 3120-00-813-7541 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B-202-1?

Key specifications for B-202-1: Nominal Tube Outside Diameter: 0.125 INCHES IN; Width Across Flats: 0.438 INCHES NOMINAL IN; Material: COPPER ALLOY OVERALL; Nut Height: 0.469 INCHES NOMINAL IN. 6 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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