BM21-6

View detailed technical data, stock status, and sourcing information for: BM21-6
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Federal Supply Group

Ship and Marine Equipment

Federal Supply Classification

2040 Marine Hardware and Hull Items

National Stock Number

2040-01-293-5641

Item Name Code

11479

Assigment Date

02/03/1989 (37 years ago)

A rectangular or square shaped item with cover to be fitted in a deck or platform hatchway opening, used for access to other decks, or platforms or levels. The item may contain a marine scuttle. Excludes:door, metal, marine structural.

aluminum material, 4.500 inches nominal overall height, 29.250 inches nominal overall diameter, equipped with chloroprene rubber seal for water tight integrity special features, 26.000 pounds nominal weight

Product Characteristics

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

Overall Height: 4.500 inches nominal
Overall Diameter: 29.250 inches nominal
Weight: 26.000 pounds nominal
Special Features: equipped with chloroprene rubber seal for water tight integrity
Material: aluminum
Shape: 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
BM21-6	Manhole Cover

FAQs

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

What is the FSCG of the NSN 2040-01-293-5641?

The FSCG of the NSN 2040-01-293-5641 is 2040

Does the NSN 2040-01-293-5641 have a Schedule B code assigned?

Yes, the Schedule B code is 7326908695

Does NSN 2040-01-293-5641 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 2040-01-293-5641 contain precious materials?

Item does not contain precious metal.

Does NSN 2040-01-293-5641 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 2040-01-293-5641 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Fri, Feb 3, 1989