PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-T-3520Tube,metallic

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4710-00-350-9897 · FSC 4710 · No Item Name Available
Verified by PartsTable
NSN 4710-00-350-9897 — this item is cataloged by the U.S. Government under National Stock Number 4710-00-350-9897. Primary manufacturer part number: MIL-T-3520.
Features
  • Tube,metallic — FSC 4710
  • First End Style: PLAIN
  • Cross-Sectional Shape Style: PLAIN ROUND
  • Specification/standard Data: 81346-ASTM-A254 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Material: STEEL COMP MT1010
  • Wall Thickness: 0.028 INCHES NOMINAL IN
  • Measuring Method and Length: 60.000 INCHES MINIMUM RANDOM AND 288.000 INCHES MAXIMUM RANDOM IN
  • Diameter: 0.312 INCHES NOMINAL IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Comp MT1010 construction
General Description

The Tube,metallic, cataloged under National Stock Number 4710-00-350-9897, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 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
NSN4710-00-350-9897
Primary Part NumberMIL-T-3520
Item NameTube,metallic
FSC / FSG4710 / 47 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
First End StylePLAIN
Cross-Sectional Shape StylePLAIN ROUND
Specification/standard Data81346-ASTM-A254 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MaterialSTEEL COMP MT1010
Wall Thickness0.028 INCHES NOMINAL IN
Measuring Method and Length60.000 INCHES MINIMUM RANDOM AND 288.000 INCHES MAXIMUM RANDOM IN
Diameter0.312 INCHES NOMINAL IN
Nondefinitive Spec/std Data3 TYPE
Surface TreatmentCOPPER OUTSIDE
ConstructionSTRAIGHT SEAMED
Welding MethodDOUBLE SUBMERGED ARC
Surface TreatmentCOPPER INSIDE
Second End Relationship with First EndIDENTICAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4710-00-200-0298 INTERCHANGEABLE
Tube,metallic
4710-00-200-0305 INTERCHANGEABLE
Tube,metallic
4710-00-289-4104 INTERCHANGEABLE
Tube,metallic
4710-00-289-410844-8310-500-010 INTERCHANGEABLE
Tube,metallic
Chief of Engineers Dept of Army
4710-00-289-8164 INTERCHANGEABLE
Tube,metallic
4710-00-289-8166 INTERCHANGEABLE
Tube,metallic
4710-00-289-8169 INTERCHANGEABLE
Tube,metallic
4710-00-335-2610 INTERCHANGEABLE
Tube,metallic
4710-00-350-9896 INTERCHANGEABLE
Tube,metallic
4710-00-541-68871756543 INTERCHANGEABLE
Tube,metallic
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
MIL-T-3520 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M3520-B80D02G Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILT3520 Bundy Tubing Co (USA)
ASTM A254 American Society for Testing and Materials Dba Astm International (USA)
861798 Spalla Inc (USA)
861798 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
Related Parts
4710-00-200-0298INTERCHANGEABLE
TUBE,METALLIC
4710-00-200-0305INTERCHANGEABLE
TUBE,METALLIC
4710-00-289-4104INTERCHANGEABLE
TUBE,METALLIC
4710-00-289-4108INTERCHANGEABLE
TUBE,METALLIC
44-8310-500-010
4710-00-289-8164INTERCHANGEABLE
TUBE,METALLIC
4710-00-289-8166INTERCHANGEABLE
TUBE,METALLIC
4710-00-289-8169INTERCHANGEABLE
TUBE,METALLIC
4710-00-335-2610INTERCHANGEABLE
TUBE,METALLIC
4710-00-350-9896INTERCHANGEABLE
TUBE,METALLIC
4710-00-541-6887INTERCHANGEABLE
TUBE,METALLIC
1756543
4710-00-640-5415INTERCHANGEABLE
TUBE,METALLIC
11639723
4710-00-880-1091INTERCHANGEABLE
TUBE,METALLIC

Frequently Asked Questions

What is NSN 4710-00-350-9897?

NSN 4710-00-350-9897 is a Tube,metallic, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4710 (No Item Name Available). Status: active.

What are the part numbers for NSN 4710-00-350-9897?

NSN 4710-00-350-9897 has 6 cross-referenced part numbers: MIL-T-3520 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M3520-B80D02G (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILT3520 (Bundy Tubing Co), ASTM A254 (American Society for Testing and Materials Dba Astm International), 861798 (Spalla Inc) and 1 more.

What NSN replaces 4710-00-350-9897?

There are 12 known substitutes for 4710-00-350-9897: 4710-00-200-0298, 4710-00-200-0305, 4710-00-289-4104 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-T-3520?

Key specifications for MIL-T-3520: First End Style: PLAIN; Cross-Sectional Shape Style: PLAIN ROUND; Specification/standard Data: 81346-ASTM-A254 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Material: STEEL COMP MT1010. 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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