2990-01-389-7777

Find complete technical information, availability, and procurement data for: 2990-01-389-7777
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-01-389-7777

Item Name Code

10849

Assigment Date

05/03/1994 (32 years ago)

A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes:shaft(1), straight; and axle(1), straight.

straight through muffler design, 20.810 inches nominal overall length, dry design type, flange single inlet inlet connection type, air coolant 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: 20.810 inches nominal
Inlet Connection Type: flange single inlet
Design Type: dry
Coolant Type: air
Muffler Design: straight through
Body Shape: rectangular
Operating Position: horizontal
Inlet Flange Shape: round single inlet
Material: steel location not otherwise specified

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
MAM06-5074	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-01-389-7777?

The FSCG of the NSN 2990-01-389-7777 is 2990

Does the NSN 2990-01-389-7777 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-01-389-7777 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 2990-01-389-7777 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-01-389-7777 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 2990-01-389-7777 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Tue, May 3, 1994