Pressure, Change Assembly4730-01-425-5281

NSN 4730-01-425-5281 · NIIN 014255281 · Part number B-1671-7

Armstrong International Inc Dba Armstrong Machine Works · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 03933

Government record, cited

NSN 4730-01-425-5281 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-425-5281. Manufacturer of record part number: B-1671-7.

Also searched as 4730-01-425-5281 · 4730014255281 · NIIN 014255281 · 01-425-5281 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 03933 · B-1671-7 · 0-749-2

Nearby stock numbers ← 4730-01-425-5277 Adapter, Straight, Flange to Hose · 4730-01-425-5292 Elbow, Swivel Flange to Tube →

4730-01-425-5281 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Pressure,change Assembly — FSC 4730
1 manufacturer part number on file
Manufacturer of record: Armstrong International Inc Dba Armstrong Machine Works

Identification

NSN: 4730-01-425-5281
NIIN: 014255281
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: B-1671-7
Manufacturer: Armstrong International Inc Dba Armstrong Machine Works

General Description

The Pressure,change Assembly, cataloged under National Stock Number 4730-01-425-5281, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Armstrong International Inc Dba Armstrong Machine Works. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4730-01-425-5281
Primary Part Number	B-1671-7
Item Name	Pressure,change Assembly
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Manufacturer	Armstrong International Inc Dba Armstrong Machine Works
Status	ACTIVE

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

Part Number	Manufacturer
B-1671-7 PRIMARY	Armstrong International Inc Dba Armstrong Machine Works (USA)

Reference documents

Reference	Meaning
0-749-2	5/9 Secondary reference Armstrong International Inc Dba Armstrong Machine Works

Frequently Asked Questions

What is NSN 4730-01-425-5281?

NSN 4730-01-425-5281 is a Pressure,change Assembly, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-425-5281?

NSN 4730-01-425-5281 has 1 manufacturer part number on file: B-1671-7 (Armstrong International Inc Dba Armstrong Machine Works).

What are the specifications of B-1671-7?

Key specifications for B-1671-7: Special Features: 1875 IN. ORIFICE INCLUDED IN; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-425-5281 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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