PartsTable TECHNICAL DATA SHEET

NSN 4730-01-147-8031Government record, cited

Spacer, Flexible, Pipeline4730-01-147-8031

NSN 4730-01-147-8031 · NIIN 011478031

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

Government record, cited

Also searched as 4730-01-147-8031 · 4730011478031 · NIIN 011478031 · 01-147-8031 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · 2642-643-11 · 4675606 · 501-4675145 · 4675145-F-19 · 87643-2101 IT F-19

Nearby stock numbers ← 4730-01-147-8030 Spacer, Flexible, Pipeline · 4730-01-147-8548 →

4730-01-147-8031 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Spacer,flexible,pipeline — FSC 4730
Flange Thickness: 0.190 INCHES NOMINAL IN
Style Designator: ROUND
Outside Diameter: 29.500 INCHES NOMINAL IN
Body Length: 2.120 INCHES NOMINAL IN
Inside Diameter: 25.600 INCHES NOMINAL IN
Flange Height: 1.950 INCHES NOMINAL IN
Material: RUBBER

Identification

NSN: 4730-01-147-8031
NIIN: 011478031
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings

General Description

The Spacer,flexible,pipeline, cataloged under National Stock Number 4730-01-147-8031, 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 9 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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	4730-01-147-8031
Item Name	Spacer,flexible,pipeline
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Status	ACTIVE
Flange Thickness	0.190 INCHES NOMINAL IN
Style Designator	ROUND
Outside Diameter	29.500 INCHES NOMINAL IN
Body Length	2.120 INCHES NOMINAL IN
Inside Diameter	25.600 INCHES NOMINAL IN
Flange Height	1.950 INCHES NOMINAL IN
Material	RUBBER
Fabrication Method	MOLDED
Thickness	0.190 INCHES NOMINAL IN

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 7

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

4730-01-148-14884675145-F-8 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4730-01-148-50554675145-F-18 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4720-01-161-64594675101-00F3 POSSIBLE MATCH

TUBING,NONMETALLIC

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4730-01-162-02854675275-0F10 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4730-01-163-09414645499-0F10B POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4730-01-163-33504675230-00F4 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4520-01-191-6167501-4675145 POSSIBLE MATCH

DAMPER,FLUE

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

Reference	Meaning
2642-643-11	5/9 Secondary reference U.S. Government activity
4675606	5/1 Secondary reference U.S. Government activity
501-4675145	5/9 Secondary reference U.S. Government activity
4675145-F-19	3/9 Design control — primary reference U.S. Government activity
87643-2101 IT F-19	5/9 Secondary reference U.S. Government activity
4675145	3/2 Design control — primary reference U.S. Government activity
4675145-F-19	5/2 Secondary reference U.S. Government activity

Related Parts

4730-01-148-1488POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

4675145-F-8

4730-01-148-5055POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

4675145-F-18

4720-01-161-6459POSSIBLE MATCH

TUBING,NONMETALLIC

4675101-00F3

4730-01-162-0285POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

4675275-0F10

4730-01-163-0941POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

4645499-0F10B

4730-01-163-3350POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

4675230-00F4

4520-01-191-6167POSSIBLE MATCH

DAMPER,FLUE

501-4675145

Frequently Asked Questions

What is NSN 4730-01-147-8031?

NSN 4730-01-147-8031 is a Spacer,flexible,pipeline, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What NSN replaces 4730-01-147-8031?

7 possible matches (shared part number, not a government interchangeability claim): 4730-01-148-1488, 4730-01-148-5055, 4720-01-161-6459. Verify interchangeability with system specifications before substitution.

What are the specifications of 4730-01-147-8031?

Key specifications for 4730-01-147-8031: Flange Thickness: 0.190 INCHES NOMINAL IN; Style Designator: ROUND; Outside Diameter: 29.500 INCHES NOMINAL IN; Body Length: 2.120 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-147-8031 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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