PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

703-1-2Adapter,straight,pipe to Tube

Nibco Inc · NSN 4730-00-289-3163 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-289-3163 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-289-3163. Primary manufacturer part number: 703-1-2.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Thread Series Designator: NPT SECOND END
  • Nominal Overall Length: 1.750 INCHES IN
  • Tubing Wall Nominal Thickness for Which Designed: 0.032 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN
  • Connection Type: THREADED INTERNAL PIPE SECOND END
  • Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN
  • Nominal Thread Size: 0.500 INCHES SECOND END IN
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 4730-00-289-3163, 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 Nibco Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, 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
NSN4730-00-289-3163
Primary Part Number703-1-2
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNibco Inc
StatusACTIVE
Thread Series DesignatorNPT SECOND END
Nominal Overall Length1.750 INCHES IN
Tubing Wall Nominal Thickness for Which Designed0.032 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST END IN
Connection TypeTHREADED INTERNAL PIPE SECOND END
Nominal Pipe Size Accommodated0.500 INCHES SECOND END IN
Nominal Thread Size0.500 INCHES SECOND END IN
Connection StyleGROOVED INSIDE (TUBE) FIRST END
MaterialCOPPER ALLOY OVERALL
Connection StylePLAIN (PIPE) SECOND END
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5325-00-012-0879120879 INTERCHANGEABLE
Grommet,nonmetallic
Chrysler Realty Company Llc Dba Daimler Chrysler
5935-00-076-302410304428 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Us Army Aviation and Missile Command
6730-00-398-2492 INTERCHANGEABLE
Relay and Motor Latch Assembly
5360-00-439-5746A-1524 INTERCHANGEABLE
Spring,helical,compression
Essex Industries, Inc. Dba Essex Industries
6145-00-669-520470312 INTERCHANGEABLE
Cable,radio Frequency
Amphenol Cable and Interconnect Technologies, Inc.
5910-00-861-27758826430-501 INTERCHANGEABLE
Retainer,capacitor
L3 Technologies, Inc. Div Communication Systems-East
6680-01-201-132670312 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
4140-01-329-828870-312 INTERCHANGEABLE
Fan,centrifugal
Associated Equipment Corporation Dba Associated Equipment Corp
Cross-Reference Index
Part NumberManufacturer
703-1-2 Nibco Inc (USA)
A-1524 Mueller Brass Co. (USA)
54B6711H6S Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
7207992P001 Lockheed Martin Corporation Div Rms (USA)
Related Parts
5325-00-012-0879INTERCHANGEABLE
GROMMET,NONMETALLIC
120879
5935-00-076-3024INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
10304428
6730-00-398-2492INTERCHANGEABLE
RELAY AND MOTOR LATCH ASSEMBLY
5360-00-439-5746INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
A-1524
6145-00-669-5204INTERCHANGEABLE
CABLE,RADIO FREQUENCY
70312
5910-00-861-2775INTERCHANGEABLE
RETAINER,CAPACITOR
8826430-501
6680-01-201-1326INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
70312
4140-01-329-8288INTERCHANGEABLE
FAN,CENTRIFUGAL
70-312

Frequently Asked Questions

What is NSN 4730-00-289-3163?

NSN 4730-00-289-3163 is a Adapter,straight,pipe to Tube, manufactured by Nibco Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-289-3163?

NSN 4730-00-289-3163 has 4 cross-referenced part numbers: 703-1-2 (Nibco Inc), A-1524 (Mueller Brass Co.), 54B6711H6S (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 7207992P001 (Lockheed Martin Corporation Div Rms).

What NSN replaces 4730-00-289-3163?

There are 8 known substitutes for 4730-00-289-3163: 5325-00-012-0879, 5935-00-076-3024, 6730-00-398-2492 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 703-1-2?

Key specifications for 703-1-2: Thread Series Designator: NPT SECOND END; Nominal Overall Length: 1.750 INCHES IN; Tubing Wall Nominal Thickness for Which Designed: 0.032 INCHES FIRST END IN; Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN. 11 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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