Expansion Joint, Pipe4730-01-321-7740

NSN 4730-01-321-7740 · NIIN 013217740

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

Government record, cited

Also searched as 4730-01-321-7740 · 4730013217740 · NIIN 013217740 · 01-321-7740 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · ASTM F1123 · MIL-E-15330 · MILE15330DCLATY1SZ1-1/2X10#150

Nearby stock numbers ← 4730-01-321-7739 Expansion Joint, Pipe · 4730-01-321-7845 Elbow, Tube →

4730-01-321-7740 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Expansion Joint,pipe — FSC 4730
Nominal Pipe Size Designation: 1.500 INCHES IN
Design Type: SPOOL
End Connection Type: FLANGED
Traverse Maximum Length: 7.000 INCHES IN
Bolt Hole Diameter: 0.562 INCHES NOMINAL IN
Nondefinitive Spec/std Data: A CLASS AND 1 TYPE
Working Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS

Identification

NSN: 4730-01-321-7740
NIIN: 013217740
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings

General Description

The Expansion Joint,pipe, cataloged under National Stock Number 4730-01-321-7740, 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 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4730-01-321-7740
Item Name	Expansion Joint,pipe
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Status	ACTIVE
Nominal Pipe Size Designation	1.500 INCHES IN
Design Type	SPOOL
End Connection Type	FLANGED
Traverse Maximum Length	7.000 INCHES IN
Bolt Hole Diameter	0.562 INCHES NOMINAL IN
Nondefinitive Spec/std Data	A CLASS AND 1 TYPE
Working Pressure Rating	150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Bolt Hole Quantity	6
Bolt Circle Diameter	3.938 INCHES NOMINAL IN
Material	COPPER ALLOY FLANGE
Joint Type	SINGLE

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

Cross-Reference Index

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

Reference documents

Reference	Meaning
ASTM F1123	3/1 Design control — primary reference U.S. Government activity
MIL-E-15330	5/9 Secondary reference U.S. Government activity
MILE15330DCLATY1SZ1-1/2X10#150	5/9 Secondary reference U.S. Government activity

Frequently Asked Questions

What is NSN 4730-01-321-7740?

NSN 4730-01-321-7740 is a Expansion Joint,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What are the specifications of 4730-01-321-7740?

Key specifications for 4730-01-321-7740: Nominal Pipe Size Designation: 1.500 INCHES IN; Design Type: SPOOL; End Connection Type: FLANGED; Traverse Maximum Length: 7.000 INCHES IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-321-7740 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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