08273M

View detailed technical data, stock status, and sourcing information for: 08273M
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-163-0818

Item Name Code

10849

Assigment Date

08/14/1972 (53 years ago)

4.625 inches nominal overall width, 11.000 inches nominal overall length, 1.355 inches minimum and 1.375 inches maximum 1st outlet outlet inside diameter, 8.375 inches nominal overall height, 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: 11.000 inches nominal
Overall Height: 8.375 inches nominal
Overall Width: 4.625 inches nominal
Inlet Connection Type: unthreaded single inlet
Outlet Inside Diameter: 1.355 inches minimum and 1.375 inches maximum 1st outlet
Design Type: dry
Coolant Type: air
Muffler Design: multipass
Baffle Quantity: 2
Tube Quantity: 3
Body Shape: oval
Operating Position: horizontal
Inlet Location: located in end section of body on vertical center line,2.875 in. above horizontal center line single inlet
Inlet Projection Length: 2.000 inches nominal single inlet2.000 inches nominal
Inlet Outside Diameter: 1.890 inches minimum and 1.910 inches maximum single inlet
Inlet Inside Diameter: 1.770 inches minimum and 1.790 inches maximum single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: located in same end as inlet on vertical center line,0.565 in. above horizontal center line 1st outlet
Outlet Projection Length: 2.000 inches nominal 1st outlet2.000 inches nominal
Outlet Outside Diameter: 1.475 inches minimum and 1.495 inches maximum 1st outlet
Special Features: bracket welded to side of body,1.250 in. from center of bracket to end of body on opposite end from inlet and outlet
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Below is a list of NSNs that have been officially superseded by this NSN: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
2990-00-394-2872	No Name Available	03/01/1977
2990-01-068-5288	No Name Available	05/01/1980

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
08273M	Exhaust Muffler
4838289	Exhaust Muffler
74776821	Exhaust Muffler
74776821-3	Exhaust Muffler
74838289	Exhaust Muffler
ABT8273	Exhaust Muffler
T-8273	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-163-0818?

The FSCG of the NSN 2990-00-163-0818 is 2990

Does the NSN 2990-00-163-0818 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-163-0818 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 2990-00-163-0818 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-163-0818 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 2990-00-163-0818 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Mon, Aug 14, 1972