97428R91

View detailed technical data, stock status, and sourcing information for: 97428R91
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-400-5185

Item Name Code

10849

Assigment Date

03/03/1969 (57 years ago)

3.500 inches nominal 1st outlet3.500 inches nominal outlet inside diameter, 9.000 inches nominal overall diameter, 31.000 inches nominal overall length, 3805-00-074-6378 end item identification, 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: 31.000 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 9.000 inches nominal
End Item Identification: 3805-00-074-6378
Outlet Inside Diameter: 3.500 inches nominal 1st outlet3.500 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Body Shape: round
Operating Position: universal
Inlet Location: centrally located in end section of body single inlet
Inlet Projection Length: 3.000 inches nominal single inlet3.000 inches nominal
Inlet Inside Diameter: 3.500 inches nominal single inlet3.500 inches nominal
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located in end section of body 1st outlet
Outlet Projection Length: 3.000 inches nominal 1st outlet3.000 inches nominal
Material: steel location not otherwise specified
Surface Treatment: aluminum alloy

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-070-9388	No Name Available	01/01/1980

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
190-9315	Exhaust Muffler
2030538	Exhaust Muffler
366740	Exhaust Muffler
97428R91	Exhaust Muffler
A18052	Exhaust Muffler
M90015	Exhaust Muffler
MUM09-0015	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-400-5185?

The FSCG of the NSN 2990-00-400-5185 is 2990

Does the NSN 2990-00-400-5185 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-400-5185 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 2990-00-400-5185 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-400-5185 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 2990-00-400-5185 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Mon, Mar 3, 1969