PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

103935Nut,tube Coupling

Triumph Thermal Systems - Maryland, Inc. · NSN 4730-00-868-6493 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-868-6493 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-868-6493. Primary manufacturer part number: 103935.
Features
  • Nut,tube Coupling — FSC 4730
  • Thread Class: 3B
  • Thread Quantity Per Inch: 20
  • Surface Treatment: ANODIZE OVERALL
  • Nut Style: TUBE COUPLING
  • Thread Series: UNF
  • Width Across Flats: 0.625 INCHES NOMINAL IN
  • Material: ALUMINUM ALLOY OVERALL
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 4730-00-868-6493, 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 Triumph Thermal Systems - Maryland, Inc.. Government technical data includes 13 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-868-6493
Primary Part Number103935
Item NameNut,tube Coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerTriumph Thermal Systems - Maryland, Inc.
StatusACTIVE
Thread Class3B
Thread Quantity Per Inch20
Surface TreatmentANODIZE OVERALL
Nut StyleTUBE COUPLING
Thread SeriesUNF
Width Across Flats0.625 INCHES NOMINAL IN
MaterialALUMINUM ALLOY OVERALL
Nut Height0.750 INCHES NOMINAL IN
Nominal Tube Outside Diameter0.312 INCHES IN
Smallest Inside Diameter0.325 INCHES NOMINAL IN
Length to Shoulder0.250 INCHES NOMINAL IN
Nominal Thread Size0.500 INCHES IN
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-359-1256103935 INTERCHANGEABLE
Seal,plain Encased
Dana Off Highway Products, Llc
3020-00-484-1413103935 INTERCHANGEABLE
Gear,spur
Astronautics Corporation of America
5360-00-498-9755103935 INTERCHANGEABLE
Spring,helical,extension
Viking Technologies, Ltd.
3110-01-053-7563103935 INTERCHANGEABLE
Ring,bearing,inner
Caterpillar Inc Div Caterpillar Defense
2520-01-263-0071103935 INTERCHANGEABLE
Housing,mechanical Drive
Dana Commercial Vehicle Products, Llc
Cross-Reference Index
Part NumberManufacturer
103935 PRIMARY Triumph Thermal Systems - Maryland, Inc. (USA)
Related Parts
5330-00-359-1256INTERCHANGEABLE
SEAL,PLAIN ENCASED
103935
3020-00-484-1413INTERCHANGEABLE
GEAR,SPUR
103935
5360-00-498-9755INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
103935
3110-01-053-7563INTERCHANGEABLE
RING,BEARING,INNER
103935
2520-01-263-0071INTERCHANGEABLE
HOUSING,MECHANICAL DRIVE
103935

Frequently Asked Questions

What is NSN 4730-00-868-6493?

NSN 4730-00-868-6493 is a Nut,tube Coupling, manufactured by Triumph Thermal Systems - Maryland, Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-868-6493?

NSN 4730-00-868-6493 has 1 cross-referenced part number: 103935 (Triumph Thermal Systems - Maryland, Inc.).

What NSN replaces 4730-00-868-6493?

There are 5 known substitutes for 4730-00-868-6493: 5330-00-359-1256, 3020-00-484-1413, 5360-00-498-9755 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 103935?

Key specifications for 103935: Thread Class: 3B; Thread Quantity Per Inch: 20; Surface Treatment: ANODIZE OVERALL; Nut Style: TUBE COUPLING. 13 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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