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NSN 4730-01-106-0637Government record, cited

Inverted Nut, Tube Coupling4730-01-106-0637

NSN 4730-01-106-0637 · NIIN 011060637 · Part number 0571351
Perkins Engines Inc · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 13446
Government record, cited
NSN 4730-01-106-0637 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-106-0637. Manufacturer of record part number: 0571351.
Also searched as  4730-01-106-0637 · 4730011060637 · NIIN 011060637 · 01-106-0637 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 13446 · 0571351
Nearby stock numbers  ·
Features
  • Inverted Nut,tube Coupling — FSC 4730
  • Width Across Flats: 0.500 INCHES NOMINAL IN
  • Tube Outside Diameter for Which Designed: 0.219 INCHES NOMINAL IN
  • Style Designator: INVERTED NUT, TUBE, FLARE
  • Thread Direction: RIGHT-HAND
  • Seat Radius: 0.062 INCHES NOMINAL IN
  • Casehardening Indicator: NOT CASEHARDENED
  • Thread Size: 3/8-24
Identification
  • NSN: 4730-01-106-0637
  • NIIN: 011060637
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: 0571351
  • Manufacturer: Perkins Engines Inc
General Description

The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-01-106-0637, 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 Perkins Engines Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-106-0637
Primary Part Number0571351
Item NameInverted Nut,tube Coupling
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerPerkins Engines Inc
StatusACTIVE
Width Across Flats0.500 INCHES NOMINAL IN
Tube Outside Diameter for Which Designed0.219 INCHES NOMINAL IN
Style DesignatorINVERTED NUT, TUBE, FLARE
Thread DirectionRIGHT-HAND
Seat Radius0.062 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Thread Size3/8-24
Screw Thread Series DesignatorUNF
Thread Class2A A
MaterialSTEEL
Fabrication MethodBAR STOCK, MACHINED
Smallest Inside Diameter0.203 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
0571351 PRIMARY Perkins Engines Inc (USA)
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 4730-01-106-0637?

NSN 4730-01-106-0637 is a Inverted Nut,tube Coupling, manufactured by Perkins Engines Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-106-0637?

NSN 4730-01-106-0637 has 1 manufacturer part number on file: 0571351 (Perkins Engines Inc).

What are the specifications of 0571351?

Key specifications for 0571351: Width Across Flats: 0.500 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 0.219 INCHES NOMINAL IN; Style Designator: INVERTED NUT, TUBE, FLARE; Overall Length: 0.562 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-106-0637 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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