MJM09-0155

View detailed technical data, stock status, and sourcing information for: MJM09-0155
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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-098-1149

Item Name Code

10849

Assigment Date

12/15/1972 (53 years ago)

unthreaded 1st inlet inlet connection type, 8.250 inches nominal overall height, 11.500 inches nominal overall width, 26.000 inches nominal overall length, unthreaded 2nd inlet inlet connection 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: 26.000 inches nominal
Overall Height: 8.250 inches nominal
Overall Width: 11.500 inches nominal
Inlet Connection Type: unthreaded 1st inlet
Inlet Connection Type: unthreaded 2nd inlet
Outlet Inside Diameter: 5.010 inches minimum and 5.030 inches maximum 1st outlet
Design Type: dry
Coolant Type: air
Body Shape: oval
Operating Position: vertical
Inlet Location: located 1.620 in. off horizontal centerline,7.120 in. from end single inlet
Inlet Projection Length: 1.500 inches nominal 1st inlet
Inlet Projection Length: 2.380 inches nominal 2nd inlet
Inlet Outside Diameter: 2.925 inches minimum and 2.955 inches maximum 1st inlet
Inlet Outside Diameter: 5.220 inches minimum and 5.250 inches maximum 2nd inlet
Inlet Inside Diameter: 1.970 inches minimum and 2.030 inches maximum 1st inlet
Inlet Inside Diameter: 4.000 inches nominal 2nd inlet
Outlet Connection Type: unthreaded 1st outlet
Outlet Location: 1.120 in.,0.380 in. off center line,locatedin end section of body 1st outlet
Outlet Projection Length: 3.310 inches nominal 1st outlet
Outlet Outside Diameter: 6.120 inches minimum and 6.130 inches maximum 1st outlet
Material: steel comp 347 or steel comp 348 or steel comp 321 location not otherwise specified
Material Document And Classification: mil-s-6721 mil spec all material responses or qq-s-766, class 321, cond a fed spec 3rd material response

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2990-00-477-2002	No Name Available	02/01/1977

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
2588619	Exhaust Muffler
MJM09-0155	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-098-1149?

The FSCG of the NSN 2990-00-098-1149 is 2990

Does the NSN 2990-00-098-1149 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-098-1149 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 2990-00-098-1149 contain precious materials?

Item does not contain precious metal.

Does NSN 2990-00-098-1149 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 2990-00-098-1149 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Fri, Dec 15, 1972