T-5646

View detailed technical data, stock status, and sourcing information for: T-5646
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-805-0830

Item Name Code

10849

Assigment Date

01/01/1962 (64 years ago)

4.625 inches nominal overall diameter, dry design type, threaded single inlet inlet connection type, 13.438 inches nominal overall length, right-hand single inlet inlet thread direction

Product Characteristics

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

Overall Length: 13.438 inches nominal
Inlet Connection Type: threaded single inlet
Inlet Thread Direction: right-hand single inlet
Overall Diameter: 4.625 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: baffle
Baffle Quantity: 1
Tube Quantity: 3
Body Shape: round
Operating Position: horizontal
Inlet Location: 1-3/8 in. c to c from horizontal center line single inlet
Inlet Projection Length: 0.813 inches nominal single inlet0.813 inches nominal
Inlet Thread Size: 1-1/4-11-1/2 single inlet
Inlet Thread Series Designator: npt single inlet
Inlet Thread Location: external single inlet
Outlet Connection Type: threaded 1st outlet
Outlet Location: 1 in. c to c from horizontal center line 1st outlet
Outlet Projection Length: 0.813 inches nominal 1st outlet0.813 inches nominal
Outlet Thread Size: 1-1/4-11-1/2 1st outlet
Outlet Thread Series Designator: npt 1st outlet
Outlet Thread Direction: right-hand 1st outlet
Outlet Thread Location: external 1st outlet
Material: steel location not otherwise specified
Fsc Application Data: engine exhaust system,nonaircraft

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-985-4826	No Name Available	03/01/1979

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
3R25727	Exhaust Muffler
ABT5646	Exhaust Muffler
T-5646	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-805-0830?

The FSCG of the NSN 2990-00-805-0830 is 2990

Does the NSN 2990-00-805-0830 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-805-0830 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 2990-00-805-0830 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-805-0830 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 2990-00-805-0830 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962