PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FX3-4INUnion,pipe to Tube

Kenco Products Co Inc · NSN 4730-00-349-9959 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-349-9959 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-349-9959. Primary manufacturer part number: FX3-4IN.
Features
  • Union,pipe to Tube — FSC 4730
  • Material: STEEL THREAD PIECECOPPER TAILPIECE
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST ENDUNTHREADED INTERNAL TUBE FIRST END
  • Nominal Outside Diameter Tube Accommodated: 0.750 INCHES FIRST END IN
  • Thread Series Designator: NPT SECOND END
  • Nominal Overall Length: 2.062 INCHES IN
  • Nominal Thread Size: 0.750 INCHES SECOND END0.750 INCHES SECOND END IN
  • Connection Type: THREADED INTERNAL PIPE SECOND ENDTHREADED INTERNAL PIPE SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Thread Piececopper Tailpiece construction
General Description

The Union,pipe to Tube, cataloged under National Stock Number 4730-00-349-9959, 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 Kenco Products Co Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-349-9959
Primary Part NumberFX3-4IN
Item NameUnion,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerKenco Products Co Inc
StatusACTIVE
MaterialSTEEL THREAD PIECECOPPER TAILPIECE
Connection TypeUNTHREADED INTERNAL TUBE FIRST ENDUNTHREADED INTERNAL TUBE FIRST END
Nominal Outside Diameter Tube Accommodated0.750 INCHES FIRST END IN
Thread Series DesignatorNPT SECOND END
Nominal Overall Length2.062 INCHES IN
Nominal Thread Size0.750 INCHES SECOND END0.750 INCHES SECOND END IN
Connection TypeTHREADED INTERNAL PIPE SECOND ENDTHREADED INTERNAL PIPE SECOND END
Connection StyleSOCKET (TUBE) FIRST ENDSOCKET (TUBE) FIRST END
MaterialSTEEL THREAD PIECE
Maximum Operating Temp210.0 FAHRENHEIT SINGLE RESPONSE210.0 FAHRENHEIT SINGLE RESPONSE DEGF
Surface TreatmentZINC THREAD PIECE
Seat TypeGASKETGASKET
Connection StylePLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
Operating Pressure250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5930-00-510-74178512470 INTERCHANGEABLE
Switch,rotary
Us Army Aviation and Missile Command
5930-00-548-9055SMC108966 INTERCHANGEABLE
Switch,rotary
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4730-00-576-0280FX1/2 INTERCHANGEABLE
Union,pipe to Tube
Kenco Products Co Inc
5930-00-660-5507832706 INTERCHANGEABLE
Switch,rotary
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament
5930-00-785-83251088646 INTERCHANGEABLE
Switch,rotary
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5930-00-817-38351088648 INTERCHANGEABLE
Switch,rotary
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5930-00-938-2795FX INTERCHANGEABLE
Switch,rotary
Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch
5930-00-955-215505016571 INTERCHANGEABLE
Switch,rotary
Bae Systems Information and Electronic Systems Integration Inc.
5930-00-960-230640-23067B01 INTERCHANGEABLE
Switch,rotary
General Dynamics Mission Systems, Inc. Dba Gdms
5998-01-669-5093 INTERCHANGEABLE
Printed Circuit Board
Cross-Reference Index
Part NumberManufacturer
FX3-4IN Kenco Products Co Inc (USA)
FX Rwm Casters Corp. (USA)
FX3-4IN Epco Sales Corp (USA)
Related Parts
5930-00-510-7417INTERCHANGEABLE
SWITCH,ROTARY
8512470
5930-00-548-9055INTERCHANGEABLE
SWITCH,ROTARY
SMC108966
4730-00-576-0280INTERCHANGEABLE
UNION,PIPE TO TUBE
FX1/2
5930-00-660-5507INTERCHANGEABLE
SWITCH,ROTARY
832706
5930-00-785-8325INTERCHANGEABLE
SWITCH,ROTARY
1088646
5930-00-817-3835INTERCHANGEABLE
SWITCH,ROTARY
1088648
5930-00-938-2795INTERCHANGEABLE
SWITCH,ROTARY
FX
5930-00-955-2155INTERCHANGEABLE
SWITCH,ROTARY
05016571
5930-00-960-2306INTERCHANGEABLE
SWITCH,ROTARY
40-23067B01
5998-01-669-5093INTERCHANGEABLE
PRINTED CIRCUIT BOARD

Frequently Asked Questions

What is NSN 4730-00-349-9959?

NSN 4730-00-349-9959 is a Union,pipe to Tube, manufactured by Kenco Products Co Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-349-9959?

NSN 4730-00-349-9959 has 3 cross-referenced part numbers: FX3-4IN (Kenco Products Co Inc), FX (Rwm Casters Corp.), FX3-4IN (Epco Sales Corp).

What NSN replaces 4730-00-349-9959?

There are 10 known substitutes for 4730-00-349-9959: 5930-00-510-7417, 5930-00-548-9055, 4730-00-576-0280 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FX3-4IN?

Key specifications for FX3-4IN: Material: STEEL THREAD PIECECOPPER TAILPIECE; Connection Type: UNTHREADED INTERNAL TUBE FIRST ENDUNTHREADED INTERNAL TUBE FIRST END; Nominal Outside Diameter Tube Accommodated: 0.750 INCHES FIRST END IN; Special Features: DIELECTRIC TYPE W/POLYAMIDE INSULATOR. 15 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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