12-MNBS

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Federal Supply Group

Engine Accessories

Federal Supply Classification

2990 Nonaircraft Miscellaneous Engine Accessories

National Stock Number

2990-00-316-4926

Item Name Code

10849

Assigment Date

01/01/1963 (63 years ago)

flange single inlet inlet connection type, wet design type, 33.750 inches nominal overall diameter, 78.000 inches nominal overall length, water 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: 78.000 inches nominal
Inlet Connection Type: flange single inlet
Overall Diameter: 33.750 inches nominal
Design Type: wet
Coolant Type: water
Body Shape: round
Operating Position: universal
Inlet Location: offset in end section of body above centerline single inlet
Inlet Projection Length: 3.500 inches nominal single inlet3.500 inches nominal
Inlet Flange Mounting Provision And Quantity: 18 holes single inlet18 holes
Inlet Flange Mounting Hole Diameter: 0.812 inches nominal single inlet0.812 inches nominal
Inlet Flange Mounting Provision Spacing: 16.062 in. bolt circle dia single inlet
Outlet Connection Type: flange 1st outlet
Outlet Location: offset in end section of body below centerline opposite end of inlet 1st outlet
Outlet Projection Length: 3.500 inches nominal 1st outlet3.500 inches nominal
Outlet Flange Shape: round 1st outlet
Outlet Flange Mounting Provision And Quantity: 18 holes 1st outlet18 holes
Outlet Flange Mounting Hole Diameter: 0.812 inches nominal 1st outlet0.812 inches nominal
Outlet Flange Mounting Provision Spacing: 16.062 in. bolt circle dia 1st outlet
Water Inlet Connection Type: flange
Water Inlet Location: on side in end section of inlet
Water Inlet Flange Shape: round
Water Inlet Flange Bolt Hole Spacing: 6.562 in bc dia
Water Inlet Flange Bolt Hole Quantity: 8
Water Inlet Flange Bolt Hole Diameter: 0.562 inches nominal
Material: steel corrosion resisting 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
12-MNBS	Exhaust Muffler
15547-A	Exhaust Muffler
A7930	Exhaust Muffler
MNBS-12	Exhaust Muffler
MUW2-24-12-12869	Exhaust Muffler
SW900-142	Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-316-4926?

The FSCG of the NSN 2990-00-316-4926 is 2990

Does the NSN 2990-00-316-4926 have a Schedule B code assigned?

Yes, the Schedule B code is 8708925000

Does NSN 2990-00-316-4926 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 2990-00-316-4926 contain precious materials?

Precious metal content is unknown

Does NSN 2990-00-316-4926 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 2990-00-316-4926 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963