NAS521-4-21

View detailed technical data, stock status, and sourcing information for: NAS521-4-21
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4720 Hose and Flexible Tubing

National Stock Number

4720-00-177-5812

Item Name Code

11116

Assigment Date

07/09/1969 (57 years ago)

0.500 inches nominal first end inside diameter, round cross-sectional shape style, 20.0 pounds per square inch maximum operating pressure, 0.030 inches minimum and 0.096 inches maximum wall thickness, plain first end connection type

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
Wall Thickness: 0.030 inches minimum and 0.096 inches maximum
Inside Diameter: 0.500 inches nominal first end
Connection Type: plain first end
Maximum Operating Pressure: 20.0 pounds per square inch
Measuring Method And Length: 5.250 inches nominal overall
Style Designator: sleeve section

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4720-00-471-3160	No Name Available	09/01/1979

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
0221-0050-0109	Air Duct Hose
NAS521-4-21	Air Duct Hose

FAQs

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

What is the FSCG of the NSN 4720-00-177-5812?

The FSCG of the NSN 4720-00-177-5812 is 4720

Does NSN 4720-00-177-5812 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 4720-00-177-5812 contain precious materials?

Precious metal content is unknown

Does NSN 4720-00-177-5812 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 4720-00-177-5812 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Wed, Jul 9, 1969