2990-00-741-0580

Find complete technical information, availability, and procurement data for: 2990-00-741-0580
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-741-0580

Item Name Code

10849

Assigment Date

01/01/1963 (63 years ago)

A rigid tubular item designed to direct the exhaust gases away from an engine, heater, or the like. For flexible items, see hose, metallic.

29.125 inches nominal overall length, 10.125 inches nominal overall height, unthreaded single inlet inlet connection type, 2.250 inches nominal 1st outlet2.250 inches nominal outlet inside diameter, 6.125 inches nominal overall width

Product Characteristics

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

Overall Length: 29.125 inches nominal
Overall Height: 10.125 inches nominal
Overall Width: 6.125 inches nominal
Inlet Connection Type: unthreaded single inlet
Outlet Inside Diameter: 2.250 inches nominal 1st outlet2.250 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Baffle Quantity: 2
Tube Quantity: 1
Body Shape: oval
Operating Position: horizontal
Inlet Location: centrally located on horizontal center line 4-13/16 in. from end of body single inlet
Inlet Projection Length: 2.250 inches nominal single inlet2.250 inches nominal
Inlet Outside Diameter: 2.625 inches nominal single inlet2.625 inches nominal
Inlet Inside Diameter: 2.500 inches nominal single inlet2.500 inches nominal
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located on horizontal center line 2-3/16 in.from end of body 1st outlet
Outlet Projection Length: 2.250 inches nominal 1st outlet2.250 inches nominal
Outlet Outside Diameter: 2.625 inches nominal 1st outlet2.625 inches nominal
Material: steel location not otherwise specified
Surface Treatment: aluminum
Fsc Application Data: exhaust system,engine,non-aircraft

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-344-9881	No Name Available	01/01/1963

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
2278138	Exhaust Muffler
7410580	Exhaust Muffler
M08001	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-741-0580?

The FSCG of the NSN 2990-00-741-0580 is 2990

Does the NSN 2990-00-741-0580 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-741-0580 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 2990-00-741-0580 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-741-0580 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 2990-00-741-0580 was assigned to the Federal Catalog?

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