PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS596-8Nut,tube Coupling

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 4730-00-826-9118 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-826-9118 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-826-9118. Primary manufacturer part number: NAS596-8.
Features
  • Nut,tube Coupling — FSC 4730
  • Largest Outside Diameter: 0.858 INCHES NOMINAL IN
  • Material Document and Classification: MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL CORROSION RESISTING OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Specification/standard Data: 80205-NAS597 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Nominal Tube Outside Diameter: 0.500 INCHES 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 4730-00-826-9118, 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 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-826-9118
Primary Part NumberNAS596-8
Item NameNut,tube Coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Largest Outside Diameter0.858 INCHES NOMINAL IN
Material Document and ClassificationMIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL CORROSION RESISTING OVERALL
Surface TreatmentPASSIVATE OVERALL
Surface Treatment Document and ClassificationMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Specification/standard Data80205-NAS597 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Nominal Tube Outside Diameter0.500 INCHES IN
Thread Class3B
Nut Height0.995 INCHES NOMINAL IN
Smallest Inside Diameter0.505 INCHES NOMINAL IN
Seat Angle33.0 DEGREES NOMINAL
Nominal Thread Size0.750 INCHES IN
Thread DirectionRIGHT-HAND
Nut StyleTUBE COUPLING
Length to Shoulder0.550 INCHES NOMINAL IN
Fabrication MethodMACHINED
Thread SeriesUNF
Width Across Flats0.590 INCHES NOMINAL IN
Thread Quantity Per Inch16
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5315-00-276-48979732 INTERCHANGEABLE
Pin,grooved,headless
Cummins Inc.
4240-00-300-6966S9300F921869PC51 INTERCHANGEABLE
Elbow,inhalation Tu
Naval Ship Systems Command
3040-00-447-54495330 INTERCHANGEABLE
Shaft,shouldered
Eaton Corp Transmission Div
5998-00-992-626141838 INTERCHANGEABLE
Printed Circuit Board
Honeywell International, Inc Div Aerospace-Tucson
5330-01-232-2169 INTERCHANGEABLE
Gasket
2030-01-279-2166 INTERCHANGEABLE
Mount,motor
Cross-Reference Index
Part NumberManufacturer
NAS596-8 Aerofit, Llc (USA)
NAS596-8 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
4183-8 Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA)
Related Parts
5315-00-276-4897INTERCHANGEABLE
PIN,GROOVED,HEADLESS
9732
4240-00-300-6966INTERCHANGEABLE
ELBOW,INHALATION TU
S9300F921869PC51
3040-00-447-5449INTERCHANGEABLE
SHAFT,SHOULDERED
5330
5998-00-992-6261INTERCHANGEABLE
PRINTED CIRCUIT BOARD
41838
5330-01-232-2169INTERCHANGEABLE
GASKET
2030-01-279-2166INTERCHANGEABLE
MOUNT,MOTOR

Frequently Asked Questions

What is NSN 4730-00-826-9118?

NSN 4730-00-826-9118 is a Nut,tube Coupling, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-826-9118?

NSN 4730-00-826-9118 has 3 cross-referenced part numbers: NAS596-8 (Aerofit, Llc), NAS596-8 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 4183-8 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp).

What NSN replaces 4730-00-826-9118?

There are 6 known substitutes for 4730-00-826-9118: 5315-00-276-4897, 4240-00-300-6966, 3040-00-447-5449 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS596-8?

Key specifications for NAS596-8: Largest Outside Diameter: 0.858 INCHES NOMINAL IN; Material Document and Classification: MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL CORROSION RESISTING OVERALL; Surface Treatment: PASSIVATE OVERALL. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-826-9118 still in active supply?

NSN 4730-00-826-9118 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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