Nut, Union4730-01-613-6271

NSN 4730-01-613-6271 · NIIN 016136271

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

Government record, cited

Also searched as 4730-01-613-6271 · 4730016136271 · NIIN 016136271 · 01-613-6271 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings

Nearby stock numbers ← 4730-01-613-6183 Flange, Pipe · 4730-01-613-6356 Clamp, Hose →

4730-01-613-6271 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Nut,union — FSC 4730
Thread Series: UN
Thread Direction: RIGHT-HAND
Nominal Thread Size: 1.750 INCHES IN
Nut Style: HEXAGON
Thread Class: 2B
Thread Quantity Per Inch: 12
Material: NICKEL ALLOY 400 AND NICKEL ALLOY R-405 OVERALL

Identification

NSN: 4730-01-613-6271
NIIN: 016136271
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 4730-01-613-6271, 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9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4730-01-613-6271
Item Name	Nut,union
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Status	ACTIVE
Thread Series	UN
Thread Direction	RIGHT-HAND
Nominal Thread Size	1.750 INCHES IN
Nut Style	HEXAGON
Thread Class	2B
Thread Quantity Per Inch	12
Material	NICKEL ALLOY 400 AND NICKEL ALLOY R-405 OVERALL
Smallest Inside Diameter	1.378 INCHES MINIMUM AND 1.381 INCHES MAXIMUM IN
Shoulder Seat Diameter	1.755 INCHES MINIMUM AND 1.765 INCHES MAXIMUM 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
803-1385990-34X-5	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4730-00-000-1895

4730-00-000-1895 · Item name not on file

4730-00-000-4289

4730-00-000-4289 · Item name not on file

4730-00-000-4445

4730-00-000-4445 · Item name not on file

4730-00-000-8373

4730-00-000-8373 · Item name not on file

4730-00-000-8897

4730-00-000-8897 · Item name not on file

4730-00-001-0007

4730-00-001-0007 · Item name not on file

4730-00-001-0008

COUPLING,TUBE

4730-00-001-0008

COUPLING,TUBE

Frequently Asked Questions

What is NSN 4730-01-613-6271?

NSN 4730-01-613-6271 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What are the specifications of 4730-01-613-6271?

Key specifications for 4730-01-613-6271: Thread Series: UN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.750 INCHES IN; Special Features: FITTING TYPE-NUT WITH END CONNECTION OF NUT OR BLANK. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-613-6271 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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