2990-00-076-9781

Find complete technical information, availability, and procurement data for: 2990-00-076-9781
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-076-9781

Item Name Code

10849

Assigment Date

01/01/1963 (63 years ago)

8.000 inches nominal overall width, unthreaded single inlet inlet connection type, 5.000 inches nominal overall height, 18.250 inches nominal overall length, 1.620 inches nominal 1st outlet1.620 inches nominal outlet inside diameter

Product Characteristics

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

Overall Length: 18.250 inches nominal
Overall Height: 5.000 inches nominal
Overall Width: 8.000 inches nominal
Inlet Connection Type: unthreaded single inlet
Outlet Inside Diameter: 1.620 inches nominal 1st outlet1.620 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: straight through w/baffle
Baffle Quantity: 1
Body Shape: oval
Operating Position: universal
Inlet Location: located on side of body single inlet
Inlet Inside Diameter: 2.030 inches nominal single inlet2.030 inches nominal
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: off-center on end of body 1st outlet
Outlet Projection Length: 2.250 inches nominal 1st outlet2.250 inches nominal
Material: steel location not otherwise specified

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
4776822-1	Exhaust Muffler
74776822	Exhaust Muffler
74776822-1	Exhaust Muffler
ABT8274	Exhaust Muffler
T-8274	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-076-9781?

The FSCG of the NSN 2990-00-076-9781 is 2990

Does the NSN 2990-00-076-9781 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-076-9781 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 2990-00-076-9781 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-076-9781 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 2990-00-076-9781 was assigned to the Federal Catalog?

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