PartsTable TECHNICAL DATA SHEET

NSN 4730-00-142-1199Government record, cited

Reducer, Tube4730-00-142-1199

NSN 4730-00-142-1199 · NIIN 001421199

FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings

Government record, cited

Also searched as 4730-00-142-1199 · 4730001421199 · NIIN 001421199 · 00-142-1199 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · 5000S4823-841338 · 5000S4823-841338PC7AND9-1 1/4X1

Nearby stock numbers ← 4730-00-142-1198 Reducer, Tube · 4730-00-142-1200 Reducer, Tube →

4730-00-142-1199 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Reducer,tube — FSC 4730
Connection Style: SOCKET BRAZING RING (TUBE) FIRST END
Connection Style: PLAIN (TUBE) SECOND END
Nominal Overall Length: 2.375 INCHES IN
Nominal Outside Diameter Tube Accommodated: 1.660 INCHES SECOND END IN
Nominal Outside Diameter Tube Accommodated: 1.315 INCHES FIRST END IN
Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Media for Which Designed: WATER-OIL-GAS SINGLE RESPONSE

Identification

NSN: 4730-00-142-1199
NIIN: 001421199
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings

General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-142-1199, 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 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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

Parameter	Value
NSN	4730-00-142-1199
Item Name	Reducer,tube
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Status	ACTIVE
Connection Style	SOCKET BRAZING RING (TUBE) FIRST END
Connection Style	PLAIN (TUBE) SECOND END
Nominal Overall Length	2.375 INCHES IN
Nominal Outside Diameter Tube Accommodated	1.660 INCHES SECOND END IN
Nominal Outside Diameter Tube Accommodated	1.315 INCHES FIRST END IN
Operating Pressure	3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Media for Which Designed	WATER-OIL-GAS SINGLE RESPONSE
Material	COPPER ALLOY OVERALL
Reference Number Differentiating Characteristics	AS DIFFERENTIATED BY THE OD TUBE ON FIRST AND SECOND END AND W/PREINSERTED RING
Reducer Type	CONCENTRIC

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 9

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4730-00-203-0924 POSSIBLE MATCH

ADAPTER,STRAIGHT,PIPE TO TUBE

Possible match (shared part number)

4730-00-203-0941 POSSIBLE MATCH

REDUCER,TUBE

Possible match (shared part number)

2040-00-273-0683 POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

Possible match (shared part number)

2040-00-273-0684 POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

Possible match (shared part number)

2040-00-273-0685 POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

Possible match (shared part number)

2040-00-273-0686 POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

Possible match (shared part number)

2040-00-273-06871385866 PLAIN 1.00 INCH POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

Possible match (shared part number)Naval Ship Systems Command

2040-00-273-0689810-2145801-1 1/2 INCH POSSIBLE MATCH

BULKHEAD SLEEVE

Possible match (shared part number)Naval Ship Systems Command

2040-00-273-0690 POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

Possible match (shared part number)

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
5000S4823-841338	5/9 Secondary reference U.S. Government activity
5000S4823-841338PC7AND9-1 1/4X1	3/1 Design control — primary reference U.S. Government activity

Related Parts

4730-00-203-0924POSSIBLE MATCH

ADAPTER,STRAIGHT,PIPE TO TUBE

4730-00-203-0941POSSIBLE MATCH

REDUCER,TUBE

2040-00-273-0683POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

2040-00-273-0684POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

2040-00-273-0685POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

2040-00-273-0686POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

2040-00-273-0687POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

1385866 PLAIN 1.00 INCH

2040-00-273-0689POSSIBLE MATCH

BULKHEAD SLEEVE

810-2145801-1 1/2 INCH

2040-00-273-0690POSSIBLE MATCH

SLEEVE,BULKHEAD AND DECK

Frequently Asked Questions

What is NSN 4730-00-142-1199?

NSN 4730-00-142-1199 is a Reducer,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What NSN replaces 4730-00-142-1199?

9 possible matches (shared part number, not a government interchangeability claim): 4730-00-203-0924, 4730-00-203-0941, 2040-00-273-0683. Verify interchangeability with system specifications before substitution.

What are the specifications of 4730-00-142-1199?

Key specifications for 4730-00-142-1199: Connection Style: SOCKET BRAZING RING (TUBE) FIRST END; Connection Style: PLAIN (TUBE) SECOND END; Nominal Overall Length: 2.375 INCHES IN; Nominal Outside Diameter Tube Accommodated: 1.660 INCHES SECOND END IN. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4730-00-142-1199 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.

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

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