4720-00-789-6556

Find complete technical information, availability, and procurement data for: 4720-00-789-6556
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4720 Hose and Flexible Tubing

National Stock Number

4720-00-789-6556

Item Name Code

20311

Assigment Date

01/01/1962 (64 years ago)

A length of nonmetallic hose with fittings on one or both ends. For items without fittings, see hose, nonmetallic. Excludes:hose assembly, air duct; and hose assembly, air duct, air breathing.

-40.0 fahrenheit and 200.0 fahrenheit single response temp rating, 0.574 inches nominal 1st end flange thickness, 1.797 inches nominal outside diameter, 1.250 inches nominal inside diameter, round cross-sectional shape style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Cross-Sectional Shape Style: round
Inside Diameter: 1.250 inches nominal
Temp Rating: -40.0 fahrenheit and 200.0 fahrenheit single response
Flange Thickness: 0.574 inches nominal 1st end
Outside Diameter: 1.797 inches nominal
Minimum Inside Bending Radius: 8.000 inches
Center To Center Distance Between Bolt Holes Along Width: 1.094 inches nominal 1st end
Center To Center Distance Between Bolt Holes Along Length: 2.312 inches nominal 1st end
Bolt Hole Quantity: 4 1st end
Flange Length: 3.125 inches nominal 1st end
Flange Width: 2.782 inches nominal 1st end
Connection Style: plain w/ gasket groove (sae flanged head) 1st end
Bolt Hole Diameter: 0.469 inches nominal 1st end
End Flange Construction: solid 1st end
End Connection Design: elbow 1st end
Connection Type: plain face flange 1st end
Burst Test Pressure: 800.0 pounds per square inch
Layer Composition And Location: 1st layer braided textile yarn and 2nd layer helix wire coil and 3rd layer braided textile yarn and outer layer molded rubber, synthetic
Maximum Operating Pressure: 200.0 pounds per square inch
Hydrostatic Test Pressure: 400.0 pounds per square inch
Flow Angle: 90.0 degrees 1st end
Outer Covering Environmental Protection: oil resistant and weatherproof
Vacuum In Torr: 50.8
Inside Surface Condition: smooth
Measuring Method And Length: 47.500 inches nominal overall
Flange Style: double oval (sae split type flange) 1st end
Special Features: permanent end fittings
Media For Which Designed: air and fuel/oil, hydrocarbon and water single response

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
20SW-20SF90-47-1-2	Nonmetallic Hose Assembly
F44871	Nonmetallic Hose Assembly
U2EL20-20PA900PEN47-1/2	Nonmetallic Hose Assembly
U2HL20-20PA90-47-1/2	Nonmetallic Hose Assembly

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4720-00-789-6556?

The FSCG of the NSN 4720-00-789-6556 is 4720

Does NSN 4720-00-789-6556 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4720-00-789-6556 contain precious materials?

Precious metal content is unknown

Does NSN 4720-00-789-6556 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4720-00-789-6556 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962