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NationalStockNumber.INFO

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Exhaust Muffler

NSN: 2990-00-493-7378 | Model: M1-740-6IN
NSN Properties and Flags
NATO Stock Number
2990-00-493-7378
DEMIL
NO
Overall Length
37.500 inches
Inlet Connection Type
Flange single inlet
Overall Diameter
22.000 inches
Outlet Inside Diameter
Any acceptable
Design Type
Wet
Coolant Type
Water
Muffler Design
Multipass
Body Shape
Round
Operating Position
Any acceptable
Inlet Location
On side 2.000 in. From vertical @centerline of body, on side directly opposite other inlet
Inlet Projection Length
4.000 inches single inlet
Inlet Flange Shape
Round single inlet
Inlet Flange Mounting Provision And Quantity
6 holes single inlet
Inlet Flange Mounting Hole Diameter
0.688 inches single inlet
Inlet Flange Mounting Provision Spacing
12.000 in. Bolt cirle diameter 1st inlet, 12.000 in. Bolt circle diameter 2nd inlet
Outlet Connection Type
Unthreaded
Outlet Location
Centrally located in end section of body
Outlet Projection Length
Any acceptable
Outlet Outside Diameter
8.625 inches
Water Inlet Connection Type
Unthreaded
Water Inlet Location
In @end section of body, opposite outlet
Err Default
Err default
Water Inlet Outside Diameter
1.000 inches
Err Default
Err default
Special Features
90.0 degrees elbow for outlet, mtg plates
Material
Steel
Material
Steel
Surface Treatment
Any acceptable

Pricing and Availability

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NSN 2990-00-493-7378 Datasheet

Supply Class (FSC):
Nonaircraft Miscellaneous Engine Accessories
Cross Reference:
  • M1-740-6IN
Cage Codes:
  • Teledyne Seacraft Div Of Teledyne (CAGE 23623)
Schedule B & Trade:
  • Schedule B: 8708925000 (NAICS 336390)

    Mufflers and exhaust pipes for vehicles, nesoi

  • SITC: 78439

    Parts and accessories n.E.S. For tractors, motor cars and other motor vehicles, trucks, public-transport vehicles and road motor vehicles, n.E.S.

  • End Use: 30230

    Other parts and accessories of vehicles

Identification:
HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    125850 - Muffler/exhaust sys/pipe/etc

  • WCC:

    593 - Motors and parts, (machinery and parts),(less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    V - Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
    Sms
  • AAC
    L
  • Quantity per pack
    1
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    9b-----
  • Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $401.23 to $668.72..
Does NSN 2990-00-493-7378 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Navy
What is the NIIN of NSN 2990-00-493-7378?
004937378 or 00-493-7378
Does NSN 2990-00-493-7378 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 2990-00-493-7378?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Feb 16, 1970