PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B-400-6Nipple,tube

Swagelok Co · NSN 4730-00-061-0389 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-061-0389 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-061-0389. Primary manufacturer part number: B-400-6.
Features
  • Nipple,tube — FSC 4730
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES ALL ENDS IN
  • Thread Series Designator: UNF ALL ENDS
  • Seat Angle: 20.0 DEGREES ALL ENDS
  • Material: COPPER ALLOY OVERALL
  • Nominal Overall Length: 1.609 INCHES IN
  • Style Designator: FLARELESS W/ CENTER WRENCHING FACILITY
  • Furnished Items and Quantity: 2 TUBE COUPLING NUT
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Nipple,tube, cataloged under National Stock Number 4730-00-061-0389, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-061-0389
Primary Part NumberB-400-6
Item NameNipple,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSwagelok Co
StatusCANCELLED
Nominal Outside Diameter Tube Accommodated0.250 INCHES ALL ENDS IN
Thread Series DesignatorUNF ALL ENDS
Seat Angle20.0 DEGREES ALL ENDS
MaterialCOPPER ALLOY OVERALL
Nominal Overall Length1.609 INCHES IN
Style DesignatorFLARELESS W/ CENTER WRENCHING FACILITY
Furnished Items and Quantity2 TUBE COUPLING NUT
Nominal Thread Size0.438 INCHES ALL ENDS IN
Thread Class2A ALL ENDS A
Connection StyleFLARELESS (TUBE) ALL ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5340-00-243-3287CD4 INTERCHANGEABLE
Button,door
Stanley Black & Decker, Inc.
5130-00-546-5433 INTERCHANGEABLE
Wrench,impact,electric
4730-00-985-1635 INTERCHANGEABLE
Nipple,tube
Cross-Reference Index
Part NumberManufacturer
4 SC 4 Parker-Hannifin Corporation Div Instrumentation Products Division (USA)
762FB1-4 Imperial (USA)
762FB Imperial (USA)
B-400-6 PRIMARY Swagelok Co (USA)
B55125-004 Pacific Consolidated Industries Llc (USA)
B4-1U Tylok International, Inc. (USA)
2488368-2 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
4U Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
4-4HBZ-B PRIMARY Parker-Hannifin Corporation Div Instrumentation Products Division (USA)
Related Parts
5340-00-243-3287INTERCHANGEABLE
BUTTON,DOOR
CD4
5130-00-546-5433INTERCHANGEABLE
WRENCH,IMPACT,ELECTRIC
4730-00-985-1635INTERCHANGEABLE
NIPPLE,TUBE

Frequently Asked Questions

What is NSN 4730-00-061-0389?

NSN 4730-00-061-0389 is a Nipple,tube, manufactured by Swagelok Co, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-061-0389?

NSN 4730-00-061-0389 has 9 cross-referenced part numbers: 4 SC 4 (Parker-Hannifin Corporation Div Instrumentation Products Division), 762FB1-4 (Imperial), 762FB (Imperial), B-400-6 (Swagelok Co), B55125-004 (Pacific Consolidated Industries Llc) and 4 more.

What NSN replaces 4730-00-061-0389?

There are 3 known substitutes for 4730-00-061-0389: 5340-00-243-3287, 5130-00-546-5433, 4730-00-985-1635. Verify interchangeability with system specifications before substitution.

What are the specifications of B-400-6?

Key specifications for B-400-6: Nominal Outside Diameter Tube Accommodated: 0.250 INCHES ALL ENDS IN; Thread Series Designator: UNF ALL ENDS; Seat Angle: 20.0 DEGREES ALL ENDS; Material: COPPER ALLOY OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-061-0389 still in active supply?

NSN 4730-00-061-0389 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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