PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

120-704Nut,tube Coupling

Atwood Fence Co Inc · NSN 4730-00-231-6384 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-231-6384 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-231-6384. Primary manufacturer part number: 120-704.
Features
  • Nut,tube Coupling — FSC 4730
  • Thread Class: 3A A
  • Thread Series: UNF
  • Nominal Tube Outside Diameter: 0.250 INCHES IN
  • Thread Quantity Per Inch: 24
  • Seat Angle: 37.00 DEGREES NOMINAL
  • Nominal Thread Size: 0.312 INCHES IN
  • Smallest Inside Diameter: 0.125 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Nut,tube Coupling, cataloged under National Stock Number 4730-00-231-6384, 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 Atwood Fence Co Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-231-6384
Primary Part Number120-704
Item NameNut,tube Coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAtwood Fence Co Inc
StatusACTIVE
Thread Class3A A
Thread SeriesUNF
Nominal Tube Outside Diameter0.250 INCHES IN
Thread Quantity Per Inch24
Seat Angle37.00 DEGREES NOMINAL
Nominal Thread Size0.312 INCHES IN
Smallest Inside Diameter0.125 INCHES NOMINAL IN
Nut Height0.812 INCHES NOMINAL IN
Nut StyleTUBE COUPLING
MaterialCOPPER ALLOY OVERALL
Thread DirectionRIGHT-HAND
Width Across Flats0.438 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5136-00-966-5977 INTERCHANGEABLE
Tap,thread Cutting
Cross-Reference Index
Part NumberManufacturer
120-704 Atwood Fence Co Inc (USA)
Related Parts
5136-00-966-5977INTERCHANGEABLE
TAP,THREAD CUTTING

Frequently Asked Questions

What is NSN 4730-00-231-6384?

NSN 4730-00-231-6384 is a Nut,tube Coupling, manufactured by Atwood Fence Co Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-231-6384?

NSN 4730-00-231-6384 has 1 cross-referenced part number: 120-704 (Atwood Fence Co Inc).

What NSN replaces 4730-00-231-6384?

There is 1 known substitute for 4730-00-231-6384: 5136-00-966-5977. Verify interchangeability with system specifications before substitution.

What are the specifications of 120-704?

Key specifications for 120-704: Thread Class: 3A A; Thread Series: UNF; Nominal Tube Outside Diameter: 0.250 INCHES IN; Thread Quantity Per Inch: 24. 12 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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