PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FIT221 3-8Tubing,nonmetallic

Belden, Inc. · NSN 4720-00-843-2706 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-843-2706 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-843-2706. Primary manufacturer part number: FIT221 3-8.
Features
  • Tubing,nonmetallic — FSC 4720
  • Measuring Method and Length: 6.000 INCHES NOMINAL OVERALL IN
  • Inside Surface Condition: SMOOTH
  • Flexibility: FLEXIBLE
  • Cross-Sectional Shape Style: ROUND
  • Outside Diameter: 0.375 INCHES NOMINAL IN
  • Material: PLASTIC POLYOLEFIN TUBE
  • Inside Diameter: 0.201 INCHES NOMINAL IN
Applications
  • Applications requiring Plastic Polyolefin Tube construction
General Description

The Tubing,nonmetallic, cataloged under National Stock Number 4720-00-843-2706, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Belden, Inc.. Government technical data includes 7 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4720-00-843-2706
Primary Part NumberFIT221 3-8
Item NameTubing,nonmetallic
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerBelden, Inc.
StatusACTIVE
Measuring Method and Length6.000 INCHES NOMINAL OVERALL IN
Inside Surface ConditionSMOOTH
FlexibilityFLEXIBLE
Cross-Sectional Shape StyleROUND
Outside Diameter0.375 INCHES NOMINAL IN
MaterialPLASTIC POLYOLEFIN TUBE
Inside Diameter0.201 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5970-00-451-0976 INTERCHANGEABLE
Insulation Sleeving,electrical
4720-01-247-3213FIT-221-3/8 INTERCHANGEABLE
Tubing,nonmetallic
Belden, Inc.
Cross-Reference Index
Part NumberManufacturer
FIT221 3-8 Belden, Inc. (USA)
Related Parts
5970-00-451-0976INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
4720-01-247-3213INTERCHANGEABLE
TUBING,NONMETALLIC
FIT-221-3/8

Frequently Asked Questions

What is NSN 4720-00-843-2706?

NSN 4720-00-843-2706 is a Tubing,nonmetallic, manufactured by Belden, Inc., classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-00-843-2706?

NSN 4720-00-843-2706 has 1 cross-referenced part number: FIT221 3-8 (Belden, Inc.).

What NSN replaces 4720-00-843-2706?

There are 2 known substitutes for 4720-00-843-2706: 5970-00-451-0976, 4720-01-247-3213. Verify interchangeability with system specifications before substitution.

What are the specifications of FIT221 3-8?

Key specifications for FIT221 3-8: Measuring Method and Length: 6.000 INCHES NOMINAL OVERALL IN; Inside Surface Condition: SMOOTH; Flexibility: FLEXIBLE; Cross-Sectional Shape Style: ROUND. 7 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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