4720-01-397-1170

Find complete technical information, availability, and procurement data for: 4720-01-397-1170
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4720 Hose and Flexible Tubing

National Stock Number

4720-01-397-1170

Item Name Code

20311

Assigment Date

10/03/1994 (31 years ago)

A valve specifically designed for installation in an air brake system. It is used on trailers, long wheel base vehicles, as well as multiple rear axle vehicles. It serves to speed and synchronize the application and release of air operated service or parking brakes. It may include emergency features for trailer application.

round cross-sectional shape style, 0.125 inches nominal inside diameter, right-hand 1st end thread direction, 3b 1st end thread class, -65.0 fahrenheit and 160.0 fahrenheit single response temp rating

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 1st end
Thread Direction: right-hand 1st end
Inside Diameter: 0.125 inches nominal
Temp Rating: -65.0 fahrenheit and 160.0 fahrenheit single response
Outside Diameter: 0.375 inches nominal
Minimum Inside Bending Radius: 2.000 inches
Connection Style: swivel nut flare 1st end
End Connection Design: straight 1st end
Connection Type: threaded internal tube 1st end
Burst Test Pressure: 2000.0 pounds per square inch
Layer Composition And Location: 1st layer braided cotton cord and outer layer molded rubber, synthetic
Maximum Operating Pressure: 300.0 pounds per square inch
Nominal Thread Size: 0.312 inches 1st end
Seat Angle: 37.0 degrees 1st end
Hydrostatic Test Pressure: 600.0 pounds per square inch
Outer Covering Environmental Protection: abrasion resistant and fuel resistant and oil resistant
Vacuum In Torr: 254.0
Inside Surface Condition: smooth
Measuring Method And Length: 21.000 inches nominal overall
Media For Which Designed: fuel/oil, hydrocarbon single response
Thread Series Designator: unf 1st end
Specification/Standard Data: 88044-an6270 government standard

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
193000-2D-0210	Nonmetallic Hose Assembly
AN6270-2D-0210	Nonmetallic Hose Assembly

FAQs

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

What is the FSCG of the NSN 4720-01-397-1170?

The FSCG of the NSN 4720-01-397-1170 is 4720

Does NSN 4720-01-397-1170 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 4720-01-397-1170 contain precious materials?

Item does not contain precious metal.

Does NSN 4720-01-397-1170 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 4720-01-397-1170 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Mon, Oct 3, 1994