2990-00-374-8564

Find complete technical information, availability, and procurement data for: 2990-00-374-8564
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-374-8564

Item Name Code

10849

Assigment Date

01/01/1963 (63 years ago)

7.000 inches nominal overall diameter, dry design type, air coolant type, unthreaded single inlet inlet connection type, 24.000 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: 24.000 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 7.000 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Baffle Quantity: 3
Tube Quantity: 2
Body Shape: round
Operating Position: horizontal
Inlet Location: located perpendicular through sides of body,2.750 in. from center of inlet to end of body single inlet
Inlet Projection Length: 5.500 inches nominal single inlet5.500 inches nominal
Inlet Outside Diameter: 2.465 inches minimum and 2.485 inches maximum single inlet
Inlet Inside Diameter: 2.405 inches minimum and 2.425 inches maximum single inlet
Outlet Connection Type: threaded 1st outlet
Outlet Location: centrally located in end section of body 1st outlet
Outlet Projection Length: 3.375 inches nominal 1st outlet3.375 inches nominal
Outlet Thread Size: 2-11-1/2 1st outlet
Outlet Thread Series Designator: npt 1st outlet
Outlet Thread Direction: right-hand 1st outlet
Outlet Thread Location: external 1st outlet
Special Features: rain cap welded to inlet pipe,inlet pipe equipped w/clamp,bracket welded to and protruding through botton of muffler w/securing holes located 15.000 in. from center of inlet to center of holes
Material: steel location not otherwise specified
Surface Treatment: aluminum

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
ABT3438	Exhaust Muffler
T-3438	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-374-8564?

The FSCG of the NSN 2990-00-374-8564 is 2990

Does the NSN 2990-00-374-8564 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-374-8564 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 2990-00-374-8564 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-374-8564 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 2990-00-374-8564 was assigned to the Federal Catalog?

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