PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

804-1 1-2Coupling,pipe

Nibco Inc · NSN 4730-00-304-3481 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-304-3481 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-304-3481. Primary manufacturer part number: 804-1 1-2.
Features
  • Coupling,pipe — FSC 4730
  • Nominal Pipe Size Accommodated: 1.500 INCHES SECOND END IN
  • Material: COPPER ALLOY OVERALL
  • Connection Type: UNTHREADED EXTERNAL PIPE SECOND END
  • Nominal Thread Size: 1.500 INCHES FIRST END IN
  • Connection Style: PLAIN (PIPE) SECOND END
  • Thread Series Designator: NPT FIRST END
  • Connection Style: PLAIN (PIPE) FIRST END
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 4730-00-304-3481, 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 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-304-3481
Primary Part Number804-1 1-2
Item NameCoupling,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNibco Inc
StatusCANCELLED
Nominal Pipe Size Accommodated1.500 INCHES SECOND END IN
MaterialCOPPER ALLOY OVERALL
Connection TypeUNTHREADED EXTERNAL PIPE SECOND END
Nominal Thread Size1.500 INCHES FIRST END IN
Connection StylePLAIN (PIPE) SECOND END
Thread Series DesignatorNPT FIRST END
Connection StylePLAIN (PIPE) FIRST END
Nominal Overall Length1.750 INCHES IN
Style DesignatorTHREADED AND PLAIN
Connection TypeTHREADED EXTERNAL PIPE FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-270-3886 INTERCHANGEABLE
Nut,slip Joint
4730-00-270-3889 INTERCHANGEABLE
Nut,slip Joint
4730-00-270-38914730002703891 INTERCHANGEABLE
Nut,slip Joint
Samuel Levine Plumbing and Heating Supplies, Inc. Div Slphs Inc
4730-00-270-3892 INTERCHANGEABLE
Nut,slip Joint
4730-00-270-3895 INTERCHANGEABLE
Nut,slip Joint
4510-00-305-7949HST05LKSB 3/8 INTERCHANGEABLE
Stop,angle,plumbing
Mcguire Mfg Co Inc
4730-00-408-7902A7009 INTERCHANGEABLE
Elbow,tube
Mueller Brass Co.
4730-00-507-0034W40109 INTERCHANGEABLE
Tee,tube
Mueller Brass Co.
4730-00-722-2637W1287 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Mueller Brass Co.
4730-00-878-3204 INTERCHANGEABLE
Elbow,tube
Cross-Reference Index
Part NumberManufacturer
804-1 1-2 Nibco Inc (USA)
B1623 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
4730-00-270-3886INTERCHANGEABLE
NUT,SLIP JOINT
4730-00-270-3889INTERCHANGEABLE
NUT,SLIP JOINT
4730-00-270-3891INTERCHANGEABLE
NUT,SLIP JOINT
4730002703891
4730-00-270-3892INTERCHANGEABLE
NUT,SLIP JOINT
4730-00-270-3895INTERCHANGEABLE
NUT,SLIP JOINT
4510-00-305-7949INTERCHANGEABLE
STOP,ANGLE,PLUMBING
HST05LKSB 3/8
4730-00-408-7902INTERCHANGEABLE
ELBOW,TUBE
A7009
4730-00-507-0034INTERCHANGEABLE
TEE,TUBE
W40109
4730-00-722-2637INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
W1287
4730-00-878-3204INTERCHANGEABLE
ELBOW,TUBE
4730-00-982-7224INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
W1279
4730-01-057-3852INTERCHANGEABLE
ELBOW,TUBE
A7088

Frequently Asked Questions

What is NSN 4730-00-304-3481?

NSN 4730-00-304-3481 is a Coupling,pipe, manufactured by Nibco Inc, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-304-3481?

NSN 4730-00-304-3481 has 2 cross-referenced part numbers: 804-1 1-2 (Nibco Inc), B1623 (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 4730-00-304-3481?

There are 12 known substitutes for 4730-00-304-3481: 4730-00-270-3886, 4730-00-270-3889, 4730-00-270-3891 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 804-1 1-2?

Key specifications for 804-1 1-2: Nominal Pipe Size Accommodated: 1.500 INCHES SECOND END IN; Material: COPPER ALLOY OVERALL; Connection Type: UNTHREADED EXTERNAL PIPE SECOND END; Nominal Thread Size: 1.500 INCHES FIRST END IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-304-3481 still in active supply?

NSN 4730-00-304-3481 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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