2990-00-860-9798

Find complete technical information, availability, and procurement data for: 2990-00-860-9798
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-860-9798

Item Name Code

10849

Assigment Date

01/01/1963 (63 years ago)

5.000 inches nominal overall diameter, 2.000 inches nominal 1st outlet outlet inside diameter, unthreaded single inlet inlet connection type, jacketed design type, 39.250 inches nominal overall length

Product Characteristics

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

Overall Length: 39.250 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 5.000 inches nominal
Outlet Inside Diameter: 2.000 inches nominal 1st outlet
Design Type: jacketed
Muffler Design: multipass
Tube Quantity: 3
Body Shape: round
Operating Position: horizontal
Inlet Location: centrally located on end of body single inlet
Inlet Projection Length: 2.500 inches nominal single inlet
Inlet Inside Diameter: 2.250 inches nominal single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located on end of body 1st outlet
Outlet Projection Length: 2.500 inches nominal 1st outlet
Material: asbestos insulation
Material: steel location not otherwise specified
Surface Treatment: aluminum or zinc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-092-3893	No Name Available	11/01/1977

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
091-91-1937614	Exhaust Muffler
1937614	Exhaust Muffler
1985	Exhaust Muffler
2825226	Exhaust Muffler
37V	Exhaust Muffler
497	Exhaust Muffler
793	Exhaust Muffler
91-1937614	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-860-9798?

The FSCG of the NSN 2990-00-860-9798 is 2990

Does the NSN 2990-00-860-9798 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-860-9798 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 2990-00-860-9798 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-860-9798 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 2990-00-860-9798 was assigned to the Federal Catalog?

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