PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2640-921X2PC1S2Tube,metallic

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 4710-00-203-6826 · FSC 4710 · No Item Name Available
Verified by PartsTable
NSN 4710-00-203-6826 — this item is cataloged by the U.S. Government under National Stock Number 4710-00-203-6826. Primary manufacturer part number: 2640-921X2PC1S2.
Features
  • Tube,metallic — FSC 4710
  • Diameter: 0.405 INCHES NOMINAL IN
  • Second End Relationship with First End: IDENTICAL
  • Measuring Method and Length: 144.000 INCHES MINIMUM RANDOM AND 240.000 INCHES MAXIMUM RANDOM IN
  • Material: COPPER ALLOY
  • First End Style: PLAIN
  • Cross-Sectional Shape Style: PLAIN ROUND
  • Construction: SEAMLESS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy construction
General Description

The Tube,metallic, cataloged under National Stock Number 4710-00-203-6826, is classified within Federal Supply Class 4710 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4710-00-203-6826
Primary Part Number2640-921X2PC1S2
Item NameTube,metallic
FSC / FSG4710 / 47 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusCANCELLED
Diameter0.405 INCHES NOMINAL IN
Second End Relationship with First EndIDENTICAL
Measuring Method and Length144.000 INCHES MINIMUM RANDOM AND 240.000 INCHES MAXIMUM RANDOM IN
MaterialCOPPER ALLOY
First End StylePLAIN
Cross-Sectional Shape StylePLAIN ROUND
ConstructionSEAMLESS
Wall Thickness0.065 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4710-00-203-6812 INTERCHANGEABLE
Tube,metallic
4710-00-203-6813 INTERCHANGEABLE
Tube,metallic
4710-00-203-6814 INTERCHANGEABLE
Tube,metallic
4710-00-203-6815 INTERCHANGEABLE
Pipe,metallic
4710-00-203-6816 INTERCHANGEABLE
Tube,metallic
4710-00-203-6817 INTERCHANGEABLE
Tube,metallic
4710-00-203-6818 INTERCHANGEABLE
Tube,metallic
4710-00-203-6819 INTERCHANGEABLE
Pipe,metallic
4710-00-203-6820 INTERCHANGEABLE
Tube,metallic
4710-00-203-6827 INTERCHANGEABLE
Tube,metallic
Cross-Reference Index
Part NumberManufacturer
2640-921X2PC1S2 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
MIL-T-20168 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2640-921X2 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
ASTM-B43 American Society for Testing and Materials Dba Astm International (USA)
Related Parts
4710-00-203-6812INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6813INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6814INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6815INTERCHANGEABLE
PIPE,METALLIC
4710-00-203-6816INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6817INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6818INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6819INTERCHANGEABLE
PIPE,METALLIC
4710-00-203-6820INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6827INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6828INTERCHANGEABLE
TUBE,METALLIC
4710-00-203-6829INTERCHANGEABLE
TUBE,METALLIC

Frequently Asked Questions

What is NSN 4710-00-203-6826?

NSN 4710-00-203-6826 is a Tube,metallic, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4710 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4710-00-203-6826?

NSN 4710-00-203-6826 has 4 cross-referenced part numbers: 2640-921X2PC1S2 (Electric Boat Corporation Div General Dynamics Electric Boat), MIL-T-20168 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 2640-921X2 (Electric Boat Corporation Div General Dynamics Electric Boat), ASTM-B43 (American Society for Testing and Materials Dba Astm International).

What NSN replaces 4710-00-203-6826?

There are 12 known substitutes for 4710-00-203-6826: 4710-00-203-6812, 4710-00-203-6813, 4710-00-203-6814 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2640-921X2PC1S2?

Key specifications for 2640-921X2PC1S2: Diameter: 0.405 INCHES NOMINAL IN; Second End Relationship with First End: IDENTICAL; Measuring Method and Length: 144.000 INCHES MINIMUM RANDOM AND 240.000 INCHES MAXIMUM RANDOM IN; Material: COPPER ALLOY. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4710-00-203-6826 still in active supply?

NSN 4710-00-203-6826 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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