4720-00-257-0349

Find complete technical information, availability, and procurement data for: 4720-00-257-0349
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4720 Hose and Flexible Tubing

National Stock Number

4720-00-257-0349

Item Name Code

20311

Assigment Date

03/26/1971 (55 years ago)

0.688 inches nominal outside diameter, right-hand 2nd end thread direction, round cross-sectional shape style, 0.375 inches nominal inside diameter, right-hand 1st 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 Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Inside Diameter: 0.375 inches nominal
Outside Diameter: 0.688 inches nominal
Connection Style: plain 2nd end
Connection Style: plain optional end 1st end
End Connection Design: straight 1st end
End Connection Design: straight 2nd end
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Thread Quantity Per Inch: 18 1st end
Thread Quantity Per Inch: 18 2nd end
Layer Composition And Location: outer layer molded rubber, synthetic and 1st layer braided fabric
Maximum Operating Pressure: 250.0 pounds per square inch
Nominal Thread Size: 0.250 inches 1st end
Nominal Thread Size: 0.250 inches 2nd end
Seat Angle: 30.0 degrees 2nd end
Outer Covering Environmental Protection: abrasion resistant and light resistant and oil resistant and solvent resistant
Inside Surface Condition: smooth
Measuring Method And Length: 18.000 inches nominal overall
Special Features: nonreusable fittings
Media For Which Designed: fuel/oil, hydrocarbon and grease and paint and water, fresh single response
Thread Series Designator: npt 1st end
Thread Series Designator: nptf 2nd end

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
53622510	Nonmetallic Hose Assembly

FAQs

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

What is the FSCG of the NSN 4720-00-257-0349?

The FSCG of the NSN 4720-00-257-0349 is 4720

Does NSN 4720-00-257-0349 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 4720-00-257-0349 contain precious materials?

Precious metal content is unknown

Does NSN 4720-00-257-0349 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 4720-00-257-0349 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Fri, Mar 26, 1971