FT-2021-4-20

View detailed technical data, stock status, and sourcing information for: FT-2021-4-20
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Federal Supply Group

Pipe, Tubing, Hose, and Fittings

Federal Supply Classification

4720 Hose and Flexible Tubing

National Stock Number

4720-00-684-7494

Item Name Code

11116

Assigment Date

01/01/1963 (63 years ago)

A flexible, tubular item of light wall construction. It must have single or multiple layers of nonmetallic material, but may contain metal wire reinforcement, foil type liner, and/or woven or braided cover. It is designed to convey under low pressure gaseous material, such as air and fumes, and light weight solid materials, such as dust, powders, and fibers. For items with couplings, see hose assembly, air duct. For items of sleeve section design rated for high pressure use, see sleeve, seal, coupling. Excludes:hose, nonmetallic.

4720-00-684-7494, air duct hose

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4720-00-081-7863	No Name Available	07/15/2015
4720-00-540-0223	No Name Available	07/01/1980
4720-00-720-1024	No Name Available	05/01/1980

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
AD-1109-4-20	Air Duct Hose
DEH201401003805	Air Duct Hose
FT-2021-4-20	Air Duct Hose
FT-2022-4-20	Air Duct Hose
FT-337A-4-20	Air Duct Hose
FT-337B-4-20	Air Duct Hose
FT2021-4-19	Air Duct Hose
GH12A-4-20	Air Duct Hose

FAQs

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

What is the FSCG of the NSN 4720-00-684-7494?

The FSCG of the NSN 4720-00-684-7494 is 4720

Does NSN 4720-00-684-7494 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 4720-00-684-7494 contain precious materials?

Precious metal content is unknown

Does NSN 4720-00-684-7494 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 4720-00-684-7494 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963