D6NN5230U

View detailed technical data, stock status, and sourcing information for: D6NN5230U
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-457-1803

Item Name Code

10849

Assigment Date

09/08/1969 (56 years ago)

9.000 inches nominal overall width, 38.500 inches nominal overall length, 4.000 inches nominal overall height, unthreaded single inlet inlet connection type, 1.812 inches nominal 1st outlet1.812 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: 38.500 inches nominal
Overall Height: 4.000 inches nominal
Overall Width: 9.000 inches nominal
Inlet Connection Type: unthreaded single inlet
Outlet Inside Diameter: 1.812 inches nominal 1st outlet1.812 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Body Shape: oval
Operating Position: horizontal
Inlet Location: centrally located on end of body single inlet
Inlet Projection Length: 4.625 inches nominal single inlet4.625 inches nominal
Inlet Outside Diameter: 1.938 inches nominal single inlet1.938 inches nominal
Inlet Inside Diameter: 1.812 inches nominal single inlet1.812 inches nominal
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located on end of body 1st outlet
Outlet Projection Length: 15.500 inches nominal 1st outlet15.500 inches nominal
Outlet Outside Diameter: 1.938 inches nominal 1st outlet1.938 inches nominal
Material: steel location not otherwise specified
Surface Treatment: paint

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-057-1416	No Name Available	12/01/1977

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
C7NN-5230-Z	Exhaust Muffler
C7NN5230J	Exhaust Muffler
D6NN5230U	Exhaust Muffler
T-13865	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-457-1803?

The FSCG of the NSN 2990-00-457-1803 is 2990

Does the NSN 2990-00-457-1803 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-457-1803 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 2990-00-457-1803 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-457-1803 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 2990-00-457-1803 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Mon, Sep 8, 1969