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NSN 4730-01-123-3798Government record, cited
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Union, Pipe4730-01-123-3798

NSN 4730-01-123-3798 · NIIN 011233798
FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Government record, cited
Also searched as  4730-01-123-3798 · 4730011233798 · NIIN 011233798 · 01-123-3798 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · 810-1385884 PIECE 3,6,8,9 1/4IPS · 803-1385884 PCS3,6,8,9 · 810-1385884 · 803-1385884 · 15-18-0320
Nearby stock numbers  ·
L 2.438 INCHES IN HOSE FITTING
4730-01-123-3798 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Union,pipe — FSC 4730
  • Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END IN
  • Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN
  • Connection Style: SOCKET (PIPE) FIRST END
  • Connection Style: PLAIN (PIPE) SECOND END
  • Nominal Overall Length: 2.438 INCHES IN
  • Connection Type: UNTHREADED INTERNAL PIPE FIRST END
  • Connection Type: UNTHREADED EXTERNAL PIPE SECOND END
Identification
  • NSN: 4730-01-123-3798
  • NIIN: 011233798
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description

The Union,pipe, cataloged under National Stock Number 4730-01-123-3798, 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 16 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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
NSN4730-01-123-3798
Item NameUnion,pipe
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
StatusACTIVE
Nominal Pipe Size Accommodated0.250 INCHES FIRST END IN
Nominal Pipe Size Accommodated0.250 INCHES SECOND END IN
Connection StyleSOCKET (PIPE) FIRST END
Connection StylePLAIN (PIPE) SECOND END
Nominal Overall Length2.438 INCHES IN
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Connection TypeUNTHREADED EXTERNAL PIPE SECOND END
Material Document and ClassificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE NUT
Material Document and ClassificationMIL-C-15726 MIL SPEC SINGLE MATERIAL RESPONSE TAILPIECE
Material Document and ClassificationMIL-C-15726 MIL SPEC SINGLE MATERIAL RESPONSE THREAD PIECE
Operating Pressure6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Seat TypeRECESSED
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
MaterialCOPPER ALLOY NUT
MaterialCOPPER TAILPIECE
MaterialCOPPER THREAD PIECE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-182-4603803-1385884 PC1 1/4IN.IPS CRES POSSIBLE MATCH
THREAD PIECE,UNION
Possible match (shared part number)Naval Ship Systems Command
4730-01-182-4609803-1385884 PC 1 1/2 IN IPS CUNI POSSIBLE MATCH
THREAD PIECE,UNION
Possible match (shared part number)Naval Ship Systems Command
4730-01-184-4759803-1385884 PC1 2IN IPS CRES POSSIBLE MATCH
THREAD PIECE,UNION
Possible match (shared part number)Naval Ship Systems Command
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
810-1385884 PIECE 3,6,8,9 1/4IPS 5/9 Secondary reference
U.S. Government activity
803-1385884 PCS3,6,8,9 3/2 Design control — primary reference
U.S. Government activity
810-1385884 5/9 Secondary reference
U.S. Government activity
803-1385884 D/9 Drawing number reference only
U.S. Government activity
15-18-0320 3/2 Design control — primary reference
U.S. Government activity
Related Parts
4730-01-182-4603POSSIBLE MATCH
THREAD PIECE,UNION
803-1385884 PC1 1/4IN.IPS CRES
4730-01-182-4609POSSIBLE MATCH
THREAD PIECE,UNION
803-1385884 PC 1 1/2 IN IPS CUNI
4730-01-184-4759POSSIBLE MATCH
THREAD PIECE,UNION
803-1385884 PC1 2IN IPS CRES
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 4730-01-123-3798?

NSN 4730-01-123-3798 is a Union,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What NSN replaces 4730-01-123-3798?

9 possible matches (shared part number, not a government interchangeability claim): 4730-01-182-4603, 4730-01-182-4609, 4730-01-184-4759. Verify interchangeability with system specifications before substitution.

What are the specifications of 4730-01-123-3798?

Key specifications for 4730-01-123-3798: Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END IN; Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN; Connection Style: SOCKET (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 16 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-123-3798 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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