4720-00-857-6644

Find complete technical information, availability, and procurement data for: 4720-00-857-6644
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4720 Hose and Flexible Tubing

National Stock Number

4720-00-857-6644

Item Name Code

20311

Assigment Date

01/01/1962 (64 years ago)

3b all ends thread class, right-hand all ends thread direction, 0.656 inches nominal outside diameter, 0.500 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
Thread Class: 3b all ends
Thread Direction: right-hand all ends
Inside Diameter: 0.500 inches nominal
Outside Diameter: 0.656 inches nominal
Angle Between Rigid Elbow Fittings In Deg: 270.0
Connection Style: swivel nut flare all ends
End Connection Design: elbow 1st end
End Fitting Component And Material: complete fitting steel corrosion resisting all ends
Connection Type: threaded internal tube all ends
Features Provided: electrostatic discharge capability
Burst Test Pressure: 7000.0 pounds per square inch
Layer Composition And Location: outer layer braided corrosion resistant steel wire
Maximum Operating Pressure: 1500.0 pounds per square inch
Nominal Thread Size: 0.875 inches 1st end
Seat Angle: 37.0 degrees all ends
Hydrostatic Test Pressure: 3000.0 pounds per square inch
Vacuum In Torr: 50.8
Inside Surface Condition: smooth
Measuring Method And Length: 9.250 inches nominal working
Thread Series Designator: unf 1st end
Specification/Standard Data: 73342-6825353-10092 manufacturers source control

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
124F312-100CR009-270	Nonmetallic Hose Assembly
6825353-10092	Nonmetallic Hose Assembly

FAQs

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

What is the FSCG of the NSN 4720-00-857-6644?

The FSCG of the NSN 4720-00-857-6644 is 4720

Does NSN 4720-00-857-6644 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 4720-00-857-6644 contain precious materials?

Precious metal content is unknown

Does NSN 4720-00-857-6644 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 4720-00-857-6644 was assigned to the Federal Catalog?

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