181A321

View detailed technical data, stock status, and sourcing information for: 181A321
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Federal Supply Group

Plumbing, Heating, and Waste Disposal Equipment

Federal Supply Classification

4520 Space and Water Heating Equipment

National Stock Number

4520-01-396-7782

Item Name Code

15679

Assigment Date

09/23/1994 (31 years ago)

A length of tubing, straight, or prebent to a predetermined angle, with added component(s) that forms an end connection on one or both ends. For flexible tube assemblies, see hose assembly (as modified). For items having perforations in the tubing or attachments, see tube assembly, fire extinguishing system. Excludes:items having integral preformed or plain ends, tube, bent (as modified), and items which are branched or forked.

1.500 inches nominal overall length, 7.100 inches nominal overall diameter, 1.500 inches nominal fitting overall length, 20 sheet metal gage size, 0.035 inches nominal overall thickness

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Overall Length: 1.500 inches nominal
Overall Diameter: 7.100 inches nominal
Overall Thickness: 0.035 inches nominal
Sheet Metal Gage Size: 20
Fitting Overall Length: 1.500 inches nominal
Fitting Inside Diameter: 7.100 inches nominal
Length: 1.500 inches
Material: aluminum alloy
Style Designator: round

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
181A321	Air Conditioning-Heating Collar
181A321-1	Air Conditioning-Heating Collar

FAQs

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

What is the FSCG of the NSN 4520-01-396-7782?

The FSCG of the NSN 4520-01-396-7782 is 4520

Does NSN 4520-01-396-7782 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 4520-01-396-7782 contain precious materials?

Item does not contain precious metal.

Does NSN 4520-01-396-7782 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 4520-01-396-7782 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Fri, Sep 23, 1994