2990-00-457-1812

Find complete technical information, availability, and procurement data for: 2990-00-457-1812
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-457-1812

Item Name Code

10849

Assigment Date

09/08/1969 (56 years ago)

air coolant type, 15.375 inches nominal overall length, unthreaded single inlet inlet connection type, 6.125 inches nominal overall diameter, 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: 15.375 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 6.125 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Baffle Quantity: 2
Tube Quantity: 3
Body Shape: round
Inlet Location: on side of body 1.688 in. ver c of inlet to end of body single inlet
Inlet Projection Length: 4.875 inches nominal single inlet4.875 inches nominal
Inlet Inside Diameter: 1.380 inches nominal single inlet1.380 inches nominal
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: on side of body 1.687 in. ver c of outlet to end of body opposite inlet end 1st outlet
Outlet Projection Length: 1.875 inches nominal 1st outlet1.875 inches nominal
Outlet Outside Diameter: 1.500 inches nominal 1st outlet1.500 inches nominal
Material: steel location not otherwise specified
Surface Treatment: paint

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
0064799333	Exhaust Muffler
4799333	Exhaust Muffler
9723A	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-457-1812?

The FSCG of the NSN 2990-00-457-1812 is 2990

Does the NSN 2990-00-457-1812 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-457-1812 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 2990-00-457-1812 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-457-1812 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 2990-00-457-1812 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Mon, Sep 8, 1969