2990-01-261-4173

Find complete technical information, availability, and procurement data for: 2990-01-261-4173
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-261-4173

Item Name Code

10849

Assigment Date

08/12/1987 (39 years ago)

A noise control/filtering device of various sizes, shapes, designs, materials (metallic/non-metallic) and varied mounting configurations used to diffuse air blasts, lowers air velocity, reduce noise, filtration of airborne moisture and/or dust contamination, pressure equalization, speed control for air operated devices. For vehicular application see muffler, (as modified).

oval body shape, air coolant type, unthreaded single inlet inlet connection type, 27.000 inches nominal overall length, 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: 27.000 inches nominal
Inlet Connection Type: unthreaded single inlet
Design Type: dry
Coolant Type: air
Body Shape: oval
Operating Position: horizontal
Inlet Outside Diameter: 2.500 inches nominal single inlet2.500 inches nominal
Inlet Integral Manifold Exhaust Pipe Length: 18.250 inches nominal single inlet18.250 inches nominal
Outlet Outside Diameter: 2.000 inches nominal 1st outlet2.000 inches nominal
Outlet Integral Tail Pipe Length: 47.125 inches nominal 1st outlet47.125 inches nominal
Material: steel location not otherwise specified
Surface Treatment: zinc

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
E2TZ5230N	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-01-261-4173?

The FSCG of the NSN 2990-01-261-4173 is 2990

Does the NSN 2990-01-261-4173 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-01-261-4173 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 2990-01-261-4173 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-01-261-4173 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 2990-01-261-4173 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Wed, Aug 12, 1987