4720-00-789-6553

Find complete technical information, availability, and procurement data for: 4720-00-789-6553
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4720 Hose and Flexible Tubing

National Stock Number

4720-00-789-6553

Item Name Code

20311

Assigment Date

01/01/1962 (64 years ago)

2b 2nd end thread class, right-hand 1st end thread direction, 2b 1st end thread class, round cross-sectional shape style, right-hand 2nd end thread direction

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
Thread Class: 2b 1st end
Thread Class: 2b 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Inside Diameter: 0.313 inches nominal
Temp Rating: -40.0 fahrenheit and 275.0 fahrenheit single response
Outside Diameter: 0.672 inches nominal
Minimum Inside Bending Radius: 4.000 inches
Exterior Color: natural
Angle Between Rigid Elbow Fittings In Deg: 30.0
Connection Style: flare 1st end
Connection Style: flare 2nd end
End Connection Design: elbow 1st end
End Connection Design: elbow 2nd end
Connection Type: threaded internal tube 1st end
Connection Type: threaded internal tube 2nd end
Burst Test Pressure: 9000.0 pounds per square inch
Layer Composition And Location: 1st layer braided cotton cord and 2nd layer braided steel wire and outer layer rubber impregnated braided cotton cord
Maximum Operating Pressure: 2250.0 pounds per square inch
Nominal Thread Size: 0.750 inches 2nd end
Nominal Thread Size: 0.750 inches 1st end
Seat Angle: 37.0 degrees and 45.0 degrees 1st end
Seat Angle: 37.0 degrees and 45.0 degrees 2nd end
Flow Angle: 105.0 degrees 2nd end
Flow Angle: 90.0 degrees 1st end
Outer Covering Environmental Protection: mildew resistant and oil resistant
Vacuum In Torr: 50.8
Inside Surface Condition: smooth
Measuring Method And Length: 11.859 inches minimum working and 12.109 inches maximum working
Media For Which Designed: air and fuel/oil, hydrocarbon single response
Thread Series Designator: unf 1st end
Thread Series Designator: unf 2nd end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2530-00-857-1429	No Name Available	11/09/1970
2990-00-891-7013	No Name Available	09/21/1970

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
0644603	Nonmetallic Hose Assembly
0644603-3	Nonmetallic Hose Assembly
629780	Nonmetallic Hose Assembly
70644603	Nonmetallic Hose Assembly

FAQs

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

What is the FSCG of the NSN 4720-00-789-6553?

The FSCG of the NSN 4720-00-789-6553 is 4720

Does NSN 4720-00-789-6553 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 4720-00-789-6553 contain precious materials?

Precious metal content is unknown

Does NSN 4720-00-789-6553 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 4720-00-789-6553 was assigned to the Federal Catalog?

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