2990-00-657-5899

Find complete technical information, availability, and procurement data for: 2990-00-657-5899
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-657-5899

Item Name Code

10849

Assigment Date

01/01/1963 (63 years ago)

10.875 inches minimum and 11.125 inches maximum overall length, 9.438 inches minimum and 9.562 inches maximum overall width, 5.688 inches minimum and 5.813 inches maximum overall height, 2.000 inches minimum and 2.006 inches maximum 1st outlet outlet inside diameter, unthreaded single inlet inlet connection 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: 10.875 inches minimum and 11.125 inches maximum
Overall Height: 5.688 inches minimum and 5.813 inches maximum
Overall Width: 9.438 inches minimum and 9.562 inches maximum
Inlet Connection Type: unthreaded single inlet
Outlet Inside Diameter: 2.000 inches minimum and 2.006 inches maximum 1st outlet
Design Type: jacketed
Muffler Design: multipass
Tube Quantity: 2
Body Shape: oval
Operating Position: horizontal
Inlet Location: 2-3/4 in. c to c from horizontal centerline single inlet
Inlet Projection Length: 0.938 inches nominal single inlet
Inlet Outside Diameter: 2.156 inches minimum and 2.219 inches maximum single inlet
Inlet Inside Diameter: 2.000 inches minimum and 2.006 inches maximum single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: 2-3/4 in. c to c from horizontal centerline 1st outlet
Outlet Projection Length: 0.938 inches nominal 1st outlet
Outlet Outside Diameter: 2.156 inches minimum and 2.219 inches maximum 1st outlet
Material: asbestos insulation
Material: steel location not otherwise specified
Fsc Application Data: engine,non aircraft

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
6575899	Exhaust Muffler
7353	Exhaust Muffler
T3134	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-657-5899?

The FSCG of the NSN 2990-00-657-5899 is 2990

Does the NSN 2990-00-657-5899 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-657-5899 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 2990-00-657-5899 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-657-5899 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 2990-00-657-5899 was assigned to the Federal Catalog?

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