PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

604-1/2Coupling,pipe

Nibco Inc · NSN 4730-00-843-7421 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-843-7421 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-843-7421. Primary manufacturer part number: 604-1/2.
Features
  • Coupling,pipe — FSC 4730
  • Nominal Thread Size: 0.500 INCHES SECOND END IN
  • Connection Style: PLAIN (PIPE) SECOND END
  • Connection Type: UNTHREADED INTERNAL PIPE FIRST END
  • Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN
  • Style Designator: GROOVED AND THREADED EXTERNAL
  • Connection Style: SOCKET (PIPE) FIRST END
  • Nominal Overall Length: 1.375 INCHES IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Coupling,pipe, cataloged under National Stock Number 4730-00-843-7421, 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 10 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-843-7421
Primary Part Number604-1/2
Item NameCoupling,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNibco Inc
StatusACTIVE
Nominal Thread Size0.500 INCHES SECOND END IN
Connection StylePLAIN (PIPE) SECOND END
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Nominal Pipe Size Accommodated0.500 INCHES FIRST END IN
Style DesignatorGROOVED AND THREADED EXTERNAL
Connection StyleSOCKET (PIPE) FIRST END
Nominal Overall Length1.375 INCHES IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
MaterialCOPPER ALLOY OVERALL
Thread Series DesignatorNPT SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5340-00-026-4412710312-1 INTERCHANGEABLE
Clamp,synchro
Honeywell International Inc. Dba Honeywell International
5306-00-151-3462 INTERCHANGEABLE
Bolt,machine
5310-00-208-32420405-10 INTERCHANGEABLE
Nut,plain,clinch
Lockheed Martin Corporation Div Rms
4820-01-033-058560412B INTERCHANGEABLE
Seat,valve
Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
Cross-Reference Index
Part NumberManufacturer
604-1/2 Nibco Inc (USA)
Related Parts
5340-00-026-4412INTERCHANGEABLE
CLAMP,SYNCHRO
710312-1
5306-00-151-3462INTERCHANGEABLE
BOLT,MACHINE
5310-00-208-3242INTERCHANGEABLE
NUT,PLAIN,CLINCH
0405-10
4820-01-033-0585INTERCHANGEABLE
SEAT,VALVE
60412B

Frequently Asked Questions

What is NSN 4730-00-843-7421?

NSN 4730-00-843-7421 is a Coupling,pipe, manufactured by Nibco Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-843-7421?

NSN 4730-00-843-7421 has 1 cross-referenced part number: 604-1/2 (Nibco Inc).

What NSN replaces 4730-00-843-7421?

There are 4 known substitutes for 4730-00-843-7421: 5340-00-026-4412, 5306-00-151-3462, 5310-00-208-3242 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 604-1/2?

Key specifications for 604-1/2: Nominal Thread Size: 0.500 INCHES SECOND END IN; Connection Style: PLAIN (PIPE) SECOND END; Connection Type: UNTHREADED INTERNAL PIPE FIRST END; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN. 10 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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