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Muffler- Protective Cap Assembly NSN 2990-00-456-1477

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 2990-00-456-1477 NSN: 2990-00-456-1477

Features and Characteristics

Pipe Outside Diameter Accommodated
3.000 inches
Material
Aluminum
FSC
2990 Nonaircraft Miscellaneous Engine Accessories
NIIN
004561477
NSN
2990004561477

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
9373
Cage Code:
80266
Status:
A
MSDS:
Part Number:
7S4992
Cage Code:
11083
Status:
A
MSDS:
Part Number:
9F9961
Cage Code:
11083
Status:
A
MSDS:
Part Number:
11077
Cage Code:
81859
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 2990-00-456-1477
What are the manufacturers of nsn 2990004561477?
Does this nsn 2990004561477 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 2990004561477
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 2990004561477 contain any precious metals?
Precious metal content is unknown.
Does nsn 2990004561477 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 2990004561477?
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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