PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FIT-221-3/8Tubing,nonmetallic

Belden, Inc. · NSN 4720-01-247-3213 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-01-247-3213 — this item is cataloged by the U.S. Government under National Stock Number 4720-01-247-3213. Primary manufacturer part number: FIT-221-3/8.
Features
  • Tubing,nonmetallic — FSC 4720
  • Outside Diameter: 0.425 INCHES NOMINAL IN
  • Inside Diameter: 0.375 INCHES NOMINAL IN
  • Minimum Tensile Strength: 2500 POUNDS PER SQUARE INCH LBS
  • Temp Rating: -55.0 CELSIUS AND 135.0 CELSIUS SINGLE RESPONSE DEGC
  • Inside Surface Condition: SMOOTH
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE TUBE
  • Flexibility: FLEXIBLE
Applications
  • Applications requiring Plastic Polytetrafluoroethylene Tube construction
General Description

The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-247-3213, 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 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN4720-01-247-3213
Primary Part NumberFIT-221-3/8
Item NameTubing,nonmetallic
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerBelden, Inc.
StatusACTIVE
Outside Diameter0.425 INCHES NOMINAL IN
Inside Diameter0.375 INCHES NOMINAL IN
Minimum Tensile Strength2500 POUNDS PER SQUARE INCH LBS
Temp Rating-55.0 CELSIUS AND 135.0 CELSIUS SINGLE RESPONSE DEGC
Inside Surface ConditionSMOOTH
MaterialPLASTIC POLYTETRAFLUOROETHYLENE TUBE
FlexibilityFLEXIBLE
Cross-Sectional Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5970-00-451-0976 INTERCHANGEABLE
Insulation Sleeving,electrical
4720-00-843-2706 INTERCHANGEABLE
Tubing,nonmetallic
Cross-Reference Index
Part NumberManufacturer
700058-187C Richards Imagery Interpretation Systems, L.l.c. (USA)
FIT-221-3/8 PRIMARY Belden, Inc. (USA)
FIT-221-3/8" Belden, Inc. (USA)
Related Parts
5970-00-451-0976INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
4720-00-843-2706INTERCHANGEABLE
TUBING,NONMETALLIC

Frequently Asked Questions

What is NSN 4720-01-247-3213?

NSN 4720-01-247-3213 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 4720-01-247-3213?

NSN 4720-01-247-3213 has 3 cross-referenced part numbers: 700058-187C (Richards Imagery Interpretation Systems, L.l.c.), FIT-221-3/8 (Belden, Inc.), FIT-221-3/8" (Belden, Inc.).

What NSN replaces 4720-01-247-3213?

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

What are the specifications of FIT-221-3/8?

Key specifications for FIT-221-3/8: Outside Diameter: 0.425 INCHES NOMINAL IN; Inside Diameter: 0.375 INCHES NOMINAL IN; Minimum Tensile Strength: 2500 POUNDS PER SQUARE INCH LBS; Temp Rating: -55.0 CELSIUS AND 135.0 CELSIUS SINGLE RESPONSE DEGC. 8 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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