PartsTable TECHNICAL DATA SHEET

NSN 4730-01-131-9745Government record, cited

Spacer, Flexible, Pipeline4730-01-131-9745

NSN 4730-01-131-9745 · NIIN 011319745

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

Government record, cited

Also searched as 4730-01-131-9745 · 4730011319745 · NIIN 011319745 · 01-131-9745 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · 845-4675606 · 501-4788759 · 2642-643-11ASSY B · 501-4788759F54 · 87643-1918ITEM F-54

Nearby stock numbers ← 4730-01-131-9744 Packing Nut · 4730-01-131-9863 →

4730-01-131-9745 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Spacer,flexible,pipeline — FSC 4730
Inside Width: 4.200 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN
Inside Length: 8.000 INCHES NOMINAL IN
Flange Thickness: 0.200 INCHES NOMINAL IN
Style Designator: RECTANGULAR
Material Document and Classification: MIL-R-6855, CLASS 2, GRADE 40 MIL SPEC SINGLE MATERIAL RESPONSE
Body Length: 1.562 INCHES MINIMUM AND 2.100 INCHES MAXIMUM IN
Outside Width: 6.800 INCHES MINIMUM AND 7.297 INCHES MAXIMUM IN

Identification

NSN: 4730-01-131-9745
NIIN: 011319745
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 4730-01-131-9745, 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10 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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	4730-01-131-9745
Item Name	Spacer,flexible,pipeline
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Status	ACTIVE
Inside Width	4.200 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN
Inside Length	8.000 INCHES NOMINAL IN
Flange Thickness	0.200 INCHES NOMINAL IN
Style Designator	RECTANGULAR
Material Document and Classification	MIL-R-6855, CLASS 2, GRADE 40 MIL SPEC SINGLE MATERIAL RESPONSE
Body Length	1.562 INCHES MINIMUM AND 2.100 INCHES MAXIMUM IN
Outside Width	6.800 INCHES MINIMUM AND 7.297 INCHES MAXIMUM IN
Material	RUBBER CHLOROPRENE CLASS CR
Fabrication Method	MOLDED
Thickness	0.200 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 5

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

4730-01-138-67542642-643X11 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

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

4730-01-147-503987643-2912IT F-69 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

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

4730-01-147-649787643-2520IT F-26 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

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

4730-01-148-14904788759-0F24 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

Possible match (shared part number)Naval Ship Systems Command

4730-01-148-835687643-1918 ITEM F-42 POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

Possible match (shared part number)Unimasco Inc

Cross-Reference Index

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

Reference documents

Reference	Meaning
845-4675606	D/9 Drawing number reference only U.S. Government activity
501-4788759	D/9 Drawing number reference only U.S. Government activity
2642-643-11ASSY B	D/9 Drawing number reference only U.S. Government activity
501-4788759F54	5/2 Secondary reference U.S. Government activity
87643-1918ITEM F-54	3/2 Design control — primary reference U.S. Government activity
4788759-0F54	5/2 Secondary reference U.S. Government activity

Related Parts

4730-01-138-6754POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

2642-643X11

4730-01-147-5039POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

87643-2912IT F-69

4730-01-147-6497POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

87643-2520IT F-26

4730-01-148-1490POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

4788759-0F24

4730-01-148-8356POSSIBLE MATCH

SPACER,FLEXIBLE,PIPELINE

87643-1918 ITEM F-42

Frequently Asked Questions

What is NSN 4730-01-131-9745?

NSN 4730-01-131-9745 is a Spacer,flexible,pipeline, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What NSN replaces 4730-01-131-9745?

5 possible matches (shared part number, not a government interchangeability claim): 4730-01-138-6754, 4730-01-147-5039, 4730-01-147-6497. Verify interchangeability with system specifications before substitution.

What are the specifications of 4730-01-131-9745?

Key specifications for 4730-01-131-9745: Inside Width: 4.200 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN; Inside Length: 8.000 INCHES NOMINAL IN; Flange Thickness: 0.200 INCHES NOMINAL IN; Style Designator: RECTANGULAR. 10 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-131-9745 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.

PartsTable Design LLC · partstable.com