2990-00-493-7378

Find complete technical information, availability, and procurement data for: 2990-00-493-7378

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2990-00-493-7378
Federal Supply Group
Engine Accessories
National Stock Number
2990-00-493-7378
Item Name Code
10849
Assigment Date
02/16/1970 (56 years ago)

A length of tubing, straight, or prebent to a predetermined angle, with added component(s) that forms an end connection on one or both ends. For flexible tube assemblies, see hose assembly (as modified). For items having perforations in the tubing or attachments, see tube assembly, fire extinguishing system. Excludes:items having integral preformed or plain ends, tube, bent (as modified), and items which are branched or forked.

wet design type, 22.000 inches nominal overall diameter, water coolant type, flange all inlets inlet connection type, 37.500 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
37.500 inches nominal
Inlet Connection Type
flange all inlets
Overall Diameter
22.000 inches nominal
Design Type
wet
Coolant Type
water
Muffler Design
multipass
Body Shape
round
Inlet Location
on side 2.000 in. from vertical centerline of body 1st inlet
Inlet Location
on side directly opposite other inlet 2nd inleton side 2.000 in. from vertical @centerline of body,on side directly opposite other inlet single inlet
Inlet Projection Length
4.000 inches nominal all inlets
Inlet Flange Shape
round all inlets
Inlet Flange Mounting Provision And Quantity
6 holes all inlets
Inlet Flange Mounting Hole Diameter
0.688 inches nominal all inlets
Inlet Flange Mounting Provision Spacing
12.000 in. bolt circle dia 1st inlet
Inlet Flange Mounting Provision Spacing
12.000 in. bolt circle dia 2nd inlet
Outlet Connection Type
unthreaded 1st outlet
Outlet Location
centrally located in end section of body 1st outlet
Outlet Outside Diameter
8.625 inches nominal 1st outlet
Water Inlet Connection Type
unthreaded
Water Inlet Location
in end section of body,opposite outlet
Water Inlet Outside Diameter
1.000 inches nominal
Special Features
90.0 deg elbow for outlet,mtg plates
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
M1-740-6IN Exhaust Muffler

FAQs

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

What is the FSCG of the NSN 2990-00-493-7378?
The FSCG of the NSN 2990-00-493-7378 is 2990
Does the NSN 2990-00-493-7378 have a Schedule B code assigned?
Yes, the Schedule B code is 8708925000
Does NSN 2990-00-493-7378 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 2990-00-493-7378 contain precious materials?
Precious metal content is unknown
Does NSN 2990-00-493-7378 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 2990-00-493-7378 was assigned to the Federal Catalog?
It was assigned 56 years ago, on Mon, Feb 16, 1970

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