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Muffler- Protective Cap Assembly NSN 2990-00-346-3980

Item Description

An item designed to fit over the opening of an engine exhaust pipe or muffler to prevent the entrance of rain or foreign matter into the manifold section of a reciprocating engine while not in use. It is automatically opened when the engine is started by pressure exerted from the exhaust system. It is equipped with a hinging action and may or may not have a counter weight. Excludes cap, protective, dust and moisture seal.

NSN 2990-00-346-3980 NSN: 2990-00-346-3980

Features and Characteristics

Pipe Diameter Range Accommodated
+4.030/+9.500 inches
Material
Steel
FSC
2990 Nonaircraft Miscellaneous Engine Accessories
NIIN
003463980
NSN
2990003463980

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5143482
Cage Code:
72582
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8412909080
  • NAICS: 333618
  • SITC: 71899
  • Description: Parts of engines and motors, nesoi
  • End Use (Code 21100):
    Industrial engines

Q & A

Frequently asked questions for NSN 2990-00-346-3980
What are the manufacturers of nsn 2990003463980?
Does this nsn 2990003463980 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 2990003463980
An item designed to fit over the opening of an engine exhaust pipe or muffler to prevent the entrance of rain or foreign matter into the manifold section of a reciprocating engine while not in use. it is automatically opened when the engine is started by pressure exerted from the exhaust system. it is equipped with a hinging action and may or may not have a counter weight. excludes cap, protective, dust and moisture seal.
Does nsn 2990003463980 contain any precious metals?
No precious metal content.
Does nsn 2990003463980 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 2990003463980?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
61446
FIIG:
A514R0
App. Key:
Cond. Code:
1
Status:
A

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