PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20639Hose,preformed

Gates Corporation · NSN 4720-00-427-5508 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-427-5508 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-427-5508. Primary manufacturer part number: 20639.
Features
  • Hose,preformed — FSC 4720
  • Outer Radius: 3.000 INCHES NOMINAL IN
  • Width: 8.000 INCHES NOMINAL IN
  • First Arm Length: 1.500 INCHES NOMINAL IN
  • Second Arm Length: 3.000 INCHES NOMINAL IN
  • Features Provided: ENLARGED ENDS
  • Material: RUBBER CHLOROPRENE CLASS CR OVERALL
  • Working Length: 15.500 INCHES NOMINAL IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Rubber Chloroprene Class Cr Overall construction
General Description

The Hose,preformed, cataloged under National Stock Number 4720-00-427-5508, 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 Gates Corporation. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4720-00-427-5508
Primary Part Number20639
Item NameHose,preformed
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerGates Corporation
StatusCANCELLED
Outer Radius3.000 INCHES NOMINAL IN
Width8.000 INCHES NOMINAL IN
First Arm Length1.500 INCHES NOMINAL IN
Second Arm Length3.000 INCHES NOMINAL IN
Features ProvidedENLARGED ENDS
MaterialRUBBER CHLOROPRENE CLASS CR OVERALL
Working Length15.500 INCHES NOMINAL IN
MaterialRUBBER CHLOROPRENE CLASS CR COVER
Offset Distance3.000 INCHES NOMINAL IN
Wall Thickness0.188 INCHES MINIMUM IN
Bend Radius2.500 INCHES NOMINAL IN
Inside Diameter2.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
6130-00-230-70966RS5GH26 INTERCHANGEABLE
Rectifier,metallic
Dean Technology Inc. Dba Cke
5133-00-266-9245 INTERCHANGEABLE
Drill,twist
5996-00-538-307770-695 INTERCHANGEABLE
Amplifier,electronic Control
Lockheed Martin Corporation Div Rms - Mitchel Field
5955-00-623-727120639 INTERCHANGEABLE
Oscillator,crystal Controlled
Sigma Tek, Inc.
5330-00-684-594220639 INTERCHANGEABLE
Gasket
Avox Systems Inc Dba Avox Systems Inc
5365-00-868-687620639 INTERCHANGEABLE
Shim
Cadillac Gage Textron Inc.
5935-01-234-7138MS3452W22-5P INTERCHANGEABLE
Connector,receptacle,electrical
Sae International Dba Sae International
1650-01-436-109220639 INTERCHANGEABLE
Holder,linear Actuator Piston Fi
Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
4730-01-516-4813C20639 INTERCHANGEABLE
Coupling,hose
Hydrasearch Company, Llc
Cross-Reference Index
Part NumberManufacturer
20639 PRIMARY Gates Corporation (USA)
433299C1 Navistar International Corporation Dba Navistar (USA)
433299C1 Navistar Intl Corp Truck Br Ohio Plant (USA)
404148C1 Navistar Intl Corp Truck Br Ohio Plant (USA)
CH695 Dayco Products Llc (USA)
385700C1 Navistar Intl Corp Truck Br Ohio Plant (USA)
CH639 Gates Corporation (USA)
MH717 Goodyear Tire and Rubber Co the (USA)
404148C1 Navistar International Corporation Dba Navistar (USA)
385700C1 Navistar International Corporation Dba Navistar (USA)
MH717 PRIMARY Contitech Usa, Inc Dba Veyance Technologies (USA)
70695 Dayco Products Llc (USA)
Related Parts
6130-00-230-7096INTERCHANGEABLE
RECTIFIER,METALLIC
6RS5GH26
5133-00-266-9245INTERCHANGEABLE
DRILL,TWIST
5996-00-538-3077INTERCHANGEABLE
AMPLIFIER,ELECTRONIC CONTROL
70-695
5955-00-623-7271INTERCHANGEABLE
OSCILLATOR,CRYSTAL CONTROLLED
20639
5330-00-684-5942INTERCHANGEABLE
GASKET
20639
5365-00-868-6876INTERCHANGEABLE
SHIM
20639
5935-01-234-7138INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MS3452W22-5P
1650-01-436-1092INTERCHANGEABLE
HOLDER,LINEAR ACTUATOR PISTON FI
20639
4730-01-516-4813INTERCHANGEABLE
COUPLING,HOSE
C20639

Frequently Asked Questions

What is NSN 4720-00-427-5508?

NSN 4720-00-427-5508 is a Hose,preformed, manufactured by Gates Corporation, classified under FSC 4720 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4720-00-427-5508?

NSN 4720-00-427-5508 has 12 cross-referenced part numbers: 20639 (Gates Corporation), 433299C1 (Navistar International Corporation Dba Navistar), 433299C1 (Navistar Intl Corp Truck Br Ohio Plant), 404148C1 (Navistar Intl Corp Truck Br Ohio Plant), CH695 (Dayco Products Llc) and 7 more.

What NSN replaces 4720-00-427-5508?

There are 9 known substitutes for 4720-00-427-5508: 6130-00-230-7096, 5133-00-266-9245, 5996-00-538-3077 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20639?

Key specifications for 20639: Outer Radius: 3.000 INCHES NOMINAL IN; Width: 8.000 INCHES NOMINAL IN; First Arm Length: 1.500 INCHES NOMINAL IN; Second Arm Length: 3.000 INCHES NOMINAL IN. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4720-00-427-5508 still in active supply?

NSN 4720-00-427-5508 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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