2990-00-164-4073

Find complete technical information, availability, and procurement data for: 2990-00-164-4073
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-164-4073

Item Name Code

10849

Assigment Date

01/01/1963 (63 years ago)

23.750 inches nominal overall length, 2.008 inches minimum and 2.013 inches maximum 1st outlet outlet inside diameter, 5.000 inches nominal overall diameter, unthreaded single inlet inlet connection type, dry design type

Product Characteristics

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

Overall Length: 23.750 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 5.000 inches nominal
Outlet Inside Diameter: 2.008 inches minimum and 2.013 inches maximum 1st outlet
Design Type: dry
Coolant Type: air
Muffler Design: straight through w/baffle
Baffle Quantity: 3
Tube Quantity: 1
Body Shape: round
Operating Position: horizontal
Inlet Location: centrally located on end of body single inlet
Inlet Projection Length: 2.000 inches nominal single inlet
Inlet Inside Diameter: 2.008 inches minimum and 2.013 inches maximum single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located on end of body 1st outlet
Outlet Projection Length: 2.000 inches nominal 1st outlet
Material: steel location not otherwise specified

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-328-8672	No Name Available	02/01/1976

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
944	Exhaust Muffler
A177M3	Exhaust Muffler
SA-1885	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-164-4073?

The FSCG of the NSN 2990-00-164-4073 is 2990

Does the NSN 2990-00-164-4073 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-164-4073 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 2990-00-164-4073 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-164-4073 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 2990-00-164-4073 was assigned to the Federal Catalog?

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