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NSN 4730-01-184-4759Government record, cited
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Thread Piece, Union4730-01-184-4759

NSN 4730-01-184-4759 · NIIN 011844759
FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Government record, cited
Also searched as  4730-01-184-4759 · 4730011844759 · NIIN 011844759 · 01-184-4759 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · 803-1385884 · 810-1385884 PC-1 2 IN IPS CRES · 803-1385884 PC1 2IN IPS CRES
Nearby stock numbers  ·
L 2.125 INCHES NOMINAL IN UN HOSE FITTING
4730-01-184-4759 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Thread Piece,union — FSC 4730
  • Union End Thread Direction: RIGHT-HAND
  • Nominal Pipe Size Designation: 2.000 INCHES IN
  • End Connection Type: WELDED
  • Union End Thread Size: 3-3/4-12
  • Seat Type: STRAIGHT FACE
  • Union End Screw Thread Series Designator: UN
  • Material: STEEL COMP 316L
Identification
  • NSN: 4730-01-184-4759
  • NIIN: 011844759
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description

The Thread Piece,union, cataloged under National Stock Number 4730-01-184-4759, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-184-4759
Item NameThread Piece,union
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
StatusACTIVE
Union End Thread DirectionRIGHT-HAND
Nominal Pipe Size Designation2.000 INCHES IN
End Connection TypeWELDED
Union End Thread Size3-3/4-12
Seat TypeSTRAIGHT FACE
Union End Screw Thread Series DesignatorUN
MaterialSTEEL COMP 316L
Working Pressure and Service Type6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-207-6092803-1385884 PC 6 1/2 IN SW CRES POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Admiral Valve Llc Dba Cpv Manufacturing
4730-01-394-5447B14521.001.150 POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4730-01-482-2668S2D10615-1 POSSIBLE MATCH
THREAD PIECE,UNION
Possible match (shared part number)Vacco Industries
4730-01-628-2333803-1385884 PC8,3/8IN,CUNI 70/30 POSSIBLE MATCH
NUT,UNION
Possible match (shared part number)Naval Ship Systems Command
4730-01-690-0791803-1385884PC8,1INNICUALSTDTHD POSSIBLE MATCH
NUT,UNION
Possible match (shared part number)Naval Ship Systems Command
4730-01-690-48161385884PC6,1NPS(M15726)NOORING POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Naval Ship Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
803-1385884 D/9 Drawing number reference only
U.S. Government activity
810-1385884 PC-1 2 IN IPS CRES 5/9 Secondary reference
U.S. Government activity
803-1385884 PC1 2IN IPS CRES 3/2 Design control — primary reference
U.S. Government activity
Related Parts
4730-01-207-6092POSSIBLE MATCH
TAILPIECE,UNION
803-1385884 PC 6 1/2 IN SW CRES
4730-01-394-5447POSSIBLE MATCH
TAILPIECE,UNION
B14521.001.150
4730-01-482-2668POSSIBLE MATCH
THREAD PIECE,UNION
S2D10615-1
4730-01-628-2333POSSIBLE MATCH
NUT,UNION
803-1385884 PC8,3/8IN,CUNI 70/30
4730-01-690-0791POSSIBLE MATCH
NUT,UNION
803-1385884PC8,1INNICUALSTDTHD
4730-01-690-4816POSSIBLE MATCH
TAILPIECE,UNION
1385884PC6,1NPS(M15726)NOORING

Frequently Asked Questions

What is NSN 4730-01-184-4759?

NSN 4730-01-184-4759 is a Thread Piece,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What NSN replaces 4730-01-184-4759?

6 possible matches (shared part number, not a government interchangeability claim): 4730-01-207-6092, 4730-01-394-5447, 4730-01-482-2668. Verify interchangeability with system specifications before substitution.

What are the specifications of 4730-01-184-4759?

Key specifications for 4730-01-184-4759: Union End Thread Direction: RIGHT-HAND; Nominal Pipe Size Designation: 2.000 INCHES IN; End Connection Type: WELDED; Union End Thread Size: 3-3/4-12. 8 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-184-4759 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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