Nut, Union4730-01-346-2719

NSN 4730-01-346-2719 · NIIN 013462719

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

Government record, cited

Also searched as 4730-01-346-2719 · 4730013462719 · NIIN 013462719 · 01-346-2719 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · 803-2177934-X3XX-04 · 803-2177934-X3XX-04 · 803-2177934

Nearby stock numbers ← 4730-01-346-2651 Reducer, Boss · 4730-01-346-2757 Adapter, Straight, Pipe to Tube →

4730-01-346-2719 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Nut,union — FSC 4730
Width Across Flats: 1.688 INCHES NOMINAL IN
Shoulder Step Width: 1.141 INCHES NOMINAL IN
Thread Series: UNS
Thread Direction: RIGHT-HAND
Nominal Thread Size: 1.438 INCHES IN
Nut Height: 0.656 INCHES NOMINAL IN
Countersink Angle: 45.0 DEGREES NOMINAL FIRST END

Identification

NSN: 4730-01-346-2719
NIIN: 013462719
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings

General Description

The Nut,union, cataloged under National Stock Number 4730-01-346-2719, 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 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4730-01-346-2719
Item Name	Nut,union
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Status	ACTIVE
Width Across Flats	1.688 INCHES NOMINAL IN
Shoulder Step Width	1.141 INCHES NOMINAL IN
Thread Series	UNS
Thread Direction	RIGHT-HAND
Nominal Thread Size	1.438 INCHES IN
Nut Height	0.656 INCHES NOMINAL IN
Countersink Angle	45.0 DEGREES NOMINAL FIRST END
Nut Style	HEXAGON
Thread Class	2B
Thread Quantity Per Inch	14
Material	NICKEL ALLOY OVERALL
Smallest Inside Diameter	1.075 INCHES NOMINAL IN
Shoulder Seat Diameter	1.125 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

Cross-Reference Index

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

Reference documents

Reference	Meaning
803-2177934-X3XX-04	3/2 Design control — primary reference U.S. Government activity
803-2177934-X3XX-04	5/9 Secondary reference Naval Sea Systems Command
803-2177934	D/9 Drawing number reference only U.S. Government activity

Frequently Asked Questions

What is NSN 4730-01-346-2719?

NSN 4730-01-346-2719 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What are the specifications of 4730-01-346-2719?

Key specifications for 4730-01-346-2719: Width Across Flats: 1.688 INCHES NOMINAL IN; Shoulder Step Width: 1.141 INCHES NOMINAL IN; Thread Series: UNS; Thread Direction: RIGHT-HAND. 13 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-346-2719 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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