2990-01-057-3701

Find complete technical information, availability, and procurement data for: 2990-01-057-3701
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-057-3701

Item Name Code

10849

Assigment Date

03/11/1978 (48 years ago)

dry design type, 6.500 inches nominal overall diameter, air coolant type, 35.500 inches nominal overall length, 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: 35.500 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 6.500 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Body Shape: round
Inlet Location: offset in end section of body 1.500 in. c of inlet to c of body single inlet
Inlet Projection Length: 3.938 inches nominal single inlet3.938 inches nominal
Inlet Inside Diameter: 2.500 inches nominal single inlet2.500 inches nominal
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: offset in end section of body 1.500 in c of outlet to c of body 1st outlet
Outlet Projection Length: 3.938 inches nominal 1st outlet3.938 inches nominal
Outlet Outside Diameter: 2.500 inches nominal 1st outlet2.500 inches nominal
Material: steel location not otherwise specified
Surface Treatment: aluminum alloy

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-922-2315	No Name Available	10/01/1993

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:

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01306100B0	Exhaust Muffler
1871	Exhaust Muffler
190-9700	Exhaust Muffler
2126048	Exhaust Muffler
21328	Exhaust Muffler
21475	Exhaust Muffler
2428242	Exhaust Muffler
3850424	Exhaust Muffler
3954017	Exhaust Muffler
9700	Exhaust Muffler
CH90	Exhaust Muffler
M21475	Exhaust Muffler
MZM06-5024	Exhaust Muffler
MZM06-5065	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-01-057-3701?

The FSCG of the NSN 2990-01-057-3701 is 2990

Does the NSN 2990-01-057-3701 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-01-057-3701 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 2990-01-057-3701 contain precious materials?

Precious metal content is unknown

Does NSN 2990-01-057-3701 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 2990-01-057-3701 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Sat, Mar 11, 1978