ABT6981

View detailed technical data, stock status, and sourcing information for: ABT6981
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-234-3041

Item Name Code

10849

Assigment Date

10/26/1970 (55 years ago)

A rigid tubular item designed to direct the exhaust gases away from an engine, heater, or the like. For flexible items, see hose, metallic.

9.500 inches nominal overall length, 4.000 inches nominal overall diameter, 1.926 inches minimum and 1.946 inches maximum 1st outlet outlet inside diameter, unthreaded single inlet inlet connection type, dry design 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: 9.500 inches nominal
Inlet Connection Type: unthreaded single inlet
Overall Diameter: 4.000 inches nominal
Outlet Inside Diameter: 1.926 inches minimum and 1.946 inches maximum 1st outlet
Design Type: dry
Coolant Type: air
Muffler Design: straight through
Tube Quantity: 1
Body Shape: round
Operating Position: horizontal
Inlet Location: centrally located in end section of body single inlet
Inlet Projection Length: 1.500 inches nominal single inlet
Inlet Outside Diameter: 2.054 inches minimum and 2.074 inches maximum single inlet
Inlet Inside Diameter: 2.005 inches minimum and 2.025 inches maximum single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located in end section of body 1st outlet
Outlet Projection Length: 1.500 inches nominal 1st outlet
Outlet Outside Diameter: 1.975 inches minimum and 1.995 inches maximum 1st outlet
Material: steel location not otherwise specified
Surface Treatment: aluminum

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
298-5085-92	Exhaust Muffler
6981	Exhaust Muffler
ABT6981	Exhaust Muffler
C0JZ5230A	Exhaust Muffler
T-6981	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-234-3041?

The FSCG of the NSN 2990-00-234-3041 is 2990

Does the NSN 2990-00-234-3041 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-234-3041 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 2990-00-234-3041 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-234-3041 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 2990-00-234-3041 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Mon, Oct 26, 1970