4720-00-987-3657

Find complete technical information, availability, and procurement data for: 4720-00-987-3657
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4720 Hose and Flexible Tubing

National Stock Number

4720-00-987-3657

Item Name Code

20311

Assigment Date

01/01/1962 (64 years ago)

right-hand 1st end thread direction, right-hand 2nd end thread direction, 0.250 inches nominal inside diameter, round cross-sectional shape style, 3a 1st end thread class

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: 3a 1st end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Inside Diameter: 0.250 inches nominal
Temp Rating: -40.0 fahrenheit and 225.0 fahrenheit single response
Outside Diameter: 0.422 inches nominal
Minimum Inside Bending Radius: 2.250 inches
End Item Identification: grumman a10 aircraft
Connection Style: flared 1st end
Connection Style: plain 2nd end
End Connection Design: straight 1st end
End Connection Design: straight 2nd end
Connection Type: threaded external pipe 2nd end
Connection Type: threaded external tube 1st end
Burst Test Pressure: 1600.0 pounds per square inch
Layer Composition And Location: 1st layer braided fabric and outer layer molded rubber, synthetic
Maximum Operating Pressure: 400.0 pounds per square inch
Nominal Thread Size: 0.125 inches 2nd end
Nominal Thread Size: 0.500 inches 1st end
Seat Angle: 45.0 degrees 1st end
Outer Covering Environmental Protection: fuel resistant and oil resistant and mildew resistant and ozone resistant
Inside Surface Condition: smooth
Measuring Method And Length: 20.000 inches nominal overall
Media For Which Designed: fuel/oil, hydrocarbon single response
Thread Series Designator: nptf 2nd end
Thread Series Designator: unf 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2805-00-946-3391	No Name Available	10/12/1972

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
4R1U2MBN5MZB20	Nonmetallic Hose Assembly
4RD1U2MBN5MZB20	Nonmetallic Hose Assembly
501-0090	Nonmetallic Hose Assembly
501-90	Nonmetallic Hose Assembly
501A90	Nonmetallic Hose Assembly

FAQs

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

What is the FSCG of the NSN 4720-00-987-3657?

The FSCG of the NSN 4720-00-987-3657 is 4720

Does the NSN 4720-00-987-3657 have a Schedule B code assigned?

Yes, the Schedule B code is 4009320050

Does NSN 4720-00-987-3657 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 4720-00-987-3657 contain precious materials?

Precious metal content is unknown

Does NSN 4720-00-987-3657 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 4720-00-987-3657 was assigned to the Federal Catalog?

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