2990-00-817-4457

Find complete technical information, availability, and procurement data for: 2990-00-817-4457
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-817-4457

Item Name Code

10849

Assigment Date

01/01/1962 (64 years ago)

15.438 inches nominal overall length, 7.000 inches nominal overall diameter, threaded single inlet inlet connection type, 3.063 inches nominal 1st outlet3.063 inches nominal outlet inside diameter, right-hand single inlet inlet thread direction

Product Characteristics

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

Overall Length: 15.438 inches nominal
Inlet Connection Type: threaded single inlet
Inlet Thread Direction: right-hand single inlet
Overall Diameter: 7.000 inches nominal
Outlet Inside Diameter: 3.063 inches nominal 1st outlet3.063 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Baffle Quantity: 1
Tube Quantity: 3
Body Shape: round
Operating Position: horizontal
Inlet Location: centrally in end section of body single inlet
Inlet Projection Length: 2.375 inches nominal single inlet2.375 inches nominal
Inlet Thread Size: 3-8 single inlet
Inlet Thread Location: external single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located in end section of body 1st outlet
Outlet Projection Length: 3.625 inches nominal 1st outlet3.625 inches nominal
Outlet Outside Diameter: 3.500 inches nominal 1st outlet3.500 inches nominal
Material: steel location not otherwise specified

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-587-0253	No Name Available	03/25/1967
2990-00-934-8058	No Name Available	10/02/1970

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
53333	Exhaust Muffler
53333A	Exhaust Muffler
808590	Exhaust Muffler
H53333	Exhaust Muffler
H53333A	Exhaust Muffler
M70002	Exhaust Muffler
MFM07-0002	Exhaust Muffler
MFM07-0039	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-817-4457?

The FSCG of the NSN 2990-00-817-4457 is 2990

Does the NSN 2990-00-817-4457 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-817-4457 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 2990-00-817-4457 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-817-4457 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 2990-00-817-4457 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962