PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

662-FS-06X04Nut,tube Coupling,reducing

Imperial · NSN 4730-01-263-6395 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-263-6395 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-263-6395. Primary manufacturer part number: 662-FS-06X04.
Features
  • Nut,tube Coupling,reducing — FSC 4730
  • Nut Height: 0.690 INCHES NOMINAL IN
  • Nominal Tube Outside Diameter: 0.250 INCHES IN
  • Nominal Thread Size: 0.562 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Material: COPPER ALLOY 360 OVERALL
  • Thread Series: UNF
  • Thread Quantity Per Inch: 18
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Nut,tube Coupling,reducing, cataloged under National Stock Number 4730-01-263-6395, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Imperial. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-263-6395
Primary Part Number662-FS-06X04
Item NameNut,tube Coupling,reducing
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerImperial
StatusACTIVE
Nut Height0.690 INCHES NOMINAL IN
Nominal Tube Outside Diameter0.250 INCHES IN
Nominal Thread Size0.562 INCHES IN
Thread DirectionRIGHT-HAND
MaterialCOPPER ALLOY 360 OVERALL
Thread SeriesUNF
Thread Quantity Per Inch18
Thread Class2B
Nut StyleTUBE COUPLING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-019-9926 INTERCHANGEABLE
Delay Line
6240-00-196-4518 INTERCHANGEABLE
Lamp,incandescent
5120-00-293-2134 INTERCHANGEABLE
Wrench,open End
5305-00-301-5484 INTERCHANGEABLE
Screw,bearing
4820-00-784-265545-02 INTERCHANGEABLE
Diaphragm,valve,flat
Norgren C a Co
8930-00-957-956700-46-850 INTERCHANGEABLE
Jelly
Portion Pac Inc
4310-01-016-42124502 INTERCHANGEABLE
Cylinder,vacuum Pump
Rotary Vacuum Pumps Inc
5962-01-080-14367702001EB INTERCHANGEABLE
Microcircuit,digital
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
5940-01-231-73344502 INTERCHANGEABLE
Terminal,lug
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5325-01-260-3090 INTERCHANGEABLE
Fastener
Cross-Reference Index
Part NumberManufacturer
662-FS-06X04 Imperial (USA)
4502 Alter Harry Co the Div of T E C (USA)
Related Parts
5999-00-019-9926INTERCHANGEABLE
DELAY LINE
6240-00-196-4518INTERCHANGEABLE
LAMP,INCANDESCENT
5120-00-293-2134INTERCHANGEABLE
WRENCH,OPEN END
5305-00-301-5484INTERCHANGEABLE
SCREW,BEARING
4820-00-784-2655INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
45-02
8930-00-957-9567INTERCHANGEABLE
JELLY
00-46-850
4310-01-016-4212INTERCHANGEABLE
CYLINDER,VACUUM PUMP
4502
5962-01-080-1436INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
7702001EB
5940-01-231-7334INTERCHANGEABLE
TERMINAL,LUG
4502
5325-01-260-3090INTERCHANGEABLE
FASTENER
5975-01-278-2829INTERCHANGEABLE
JUNCTION BOX
1650-01-433-6920INTERCHANGEABLE
CYLINDER,HYDRAULIC ACCUMULATOR
4502

Frequently Asked Questions

What is NSN 4730-01-263-6395?

NSN 4730-01-263-6395 is a Nut,tube Coupling,reducing, manufactured by Imperial, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-263-6395?

NSN 4730-01-263-6395 has 2 cross-referenced part numbers: 662-FS-06X04 (Imperial), 4502 (Alter Harry Co the Div of T E C).

What NSN replaces 4730-01-263-6395?

There are 12 known substitutes for 4730-01-263-6395: 5999-00-019-9926, 6240-00-196-4518, 5120-00-293-2134 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 662-FS-06X04?

Key specifications for 662-FS-06X04: Nut Height: 0.690 INCHES NOMINAL IN; Nominal Tube Outside Diameter: 0.250 INCHES IN; Nominal Thread Size: 0.562 INCHES IN; Thread Direction: RIGHT-HAND. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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