ABT5777

View detailed technical data, stock status, and sourcing information for: ABT5777
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-518-3101

Item Name Code

10849

Assigment Date

01/01/1961 (65 years ago)

1.000 inches nominal 1st outlet1.000 inches nominal outlet inside diameter, right-hand single inlet inlet thread direction, 4.500 inches nominal overall diameter, threaded single inlet inlet connection type, 9.125 inches nominal overall length

Product Characteristics

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

Overall Length: 9.125 inches nominal
Inlet Connection Type: threaded single inlet
Inlet Thread Direction: right-hand single inlet
Overall Diameter: 4.500 inches nominal
Outlet Inside Diameter: 1.000 inches nominal 1st outlet1.000 inches nominal
Design Type: dry
Coolant Type: air
Muffler Design: multipass w/integral spark arrestor
Tube Quantity: 2
Body Shape: round
Operating Position: horizontal
Inlet Location: located 1-5/16 in. c to c from horizontal centerline single inlet
Inlet Projection Length: 1.125 inches nominal single inlet1.125 inches nominal
Inlet Thread Size: 1-11-1/2 single inlet
Inlet Thread Series Designator: npt single inlet
Inlet Thread Location: external single inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: centrally located in end section of body 1st outlet
Outlet Projection Length: 4.625 inches nominal 1st outlet4.625 inches nominal
Outlet Outside Diameter: 1.049 inches nominal 1st outlet1.049 inches nominal
Special Features: with cleanout plug
Material: steel location not otherwise specified
Surface Treatment: aluminum
Fsc Application Data: 1. engine,except aircraft and guided missile prime moving

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-800-7220	No Name Available	07/24/1971

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
2196920	Exhaust Muffler
ABT5777	Exhaust Muffler
T-5777	Exhaust Muffler
WD-42-B	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-518-3101?

The FSCG of the NSN 2990-00-518-3101 is 2990

Does the NSN 2990-00-518-3101 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-518-3101 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 2990-00-518-3101 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-518-3101 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 2990-00-518-3101 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961