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Exhaust Muffler NSN 2990-00-203-4257

NSN 2990-00-203-4257 NSN: 2990-00-203-4257

Features and Characteristics

Insulation Material
Spun glass
Overall Length
23.875 inches
Inlet Connection Type
Unthreaded
Overall Diameter
5.500 inches
Outlet Inside Diameter
5.000 inches
Design Type
Dry
Muffler Design
Straight through
Body Shape
Round
Operating Position
Vertical
Inlet Location
Centrally located in end section of body
Inlet Projection Length
3.500 inches
Inlet Outside Diameter
3.000 inches
Inlet Inside Diameter
2.924 inches
Outlet Connection Type
Unthreaded single inlet
Outlet Location
Centrally located in end section of body
Outlet Flange Shape
Round
Outlet Flange Mounting Provision And Quantity
6 holes
Outlet Flange Mounting Hole Diameter
0.200 inches
Outlet Flange Mounting Provision Spacing
6-3/4 in. Diameter bolt circle
Outlet Outside Diameter
5.500 inches
Material
Steel, mil-s-6721
Material
Steel comp 347 or steel comp 321 or steel comp 348
Material Specification
Mil-s-6721 military specification single material response
FSC
2990 Nonaircraft Miscellaneous Engine Accessories
NIIN
002034257
NSN
2990002034257

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
7839437-10
Cage Code:
22165
Status:
A
MSDS:
Part Number:
7545785-10
Cage Code:
22165
Status:
A
MSDS:
Part Number:
235-0076-16
Cage Code:
70898
Status:
A
MSDS:
Part Number:
64D24694
Cage Code:
98750
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8708925000
  • NAICS: 336390
  • SITC: 78439
  • Description: Mufflers and exhaust pipes for vehicles, nesoi
  • End Use (Code 30230):
    Other parts and accessories of vehicles

Q & A

Frequently asked questions for NSN 2990-00-203-4257
What are the manufacturers of nsn 2990002034257?
Does this nsn 2990002034257 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 2990002034257
Does nsn 2990002034257 contain any precious metals?
Precious metal content is unknown.
Does nsn 2990002034257 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 2990002034257?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
10849
FIIG:
T135-C
App. Key:
CA
Cond. Code:
2
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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