Nut, Union 4730-01-346-6166 NSN 4730-01-346-6166 · NIIN 013466166
FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Also searched as
4730-01-346-6166 ·
4730013466166 ·
NIIN 013466166 ·
01-346-6166 ·
FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings
Nearby stock numbers
← 4730-01-346-6054 Reducer, Pipe
·
4730-01-346-6220 Coupling, Hose →
⌀2.312 INCHES NOMINAL IN
12
HOSE FITTING
4730-01-346-6166 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Nut,union — FSC 4730 Width Across Flats: 2.562 INCHES NOMINAL IN Shoulder Step Width: 0.250 INCHES NOMINAL IN Shoulder Width: 0.312 INCHES NOMINAL IN Thread Series: UNS Thread Direction: RIGHT-HAND Nominal Thread Size: 2.312 INCHES IN Nut Height: 1.187 INCHES NOMINAL IN
Identification
NSN: 4730-01-346-6166
NIIN: 013466166
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 4730-01-346-6166, 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13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 4730-01-346-6166 Item Name Nut,union FSC / FSG 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings Status ACTIVE Width Across Flats 2.562 INCHES NOMINAL IN Shoulder Step Width 0.250 INCHES NOMINAL IN Shoulder Width 0.312 INCHES NOMINAL IN Thread Series UNS Thread Direction RIGHT-HAND Nominal Thread Size 2.312 INCHES IN Nut Height 1.187 INCHES NOMINAL IN Nut Style HEXAGON Thread Class 2B Thread Quantity Per Inch 12 Material COPPER ALLOY OVERALL Smallest Inside Diameter 1.940 INCHES NOMINAL IN Shoulder Seat Diameter 2.312 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
50N-5-M
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 4730-01-346-6166?
NSN 4730-01-346-6166 is a Nut,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What are the specifications of 4730-01-346-6166?
Key specifications for 4730-01-346-6166: Width Across Flats: 2.562 INCHES NOMINAL IN; Shoulder Step Width: 0.250 INCHES NOMINAL IN; Shoulder Width: 0.312 INCHES NOMINAL IN; Thread Series: UNS. 13 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-346-6166 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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