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Muffler- Protective Cap Assembly NSN 2990-00-870-7520

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 2990-00-870-7520 NSN: 2990-00-870-7520

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Features and Characteristics

Pipe Diameter Range Accommodated
+4.750/+5.000 inches
Material
Steel
FSC
2990 Nonaircraft Miscellaneous Engine Accessories
NIIN
008707520
NSN
2990008707520

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
11016
Cage Code:
11431
Status:
A
MSDS:
Part Number:
407-B6431
Cage Code:
55683
Status:
A
MSDS:
Part Number:
B6431
Cage Code:
96787
Status:
A
MSDS:
Part Number:
610210C91
Cage Code:
0SAT8
Status:
A
MSDS:
Part Number:
321577R91
Cage Code:
29510
Status:
A
MSDS:
Part Number:
SIZE15
Cage Code:
11431
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 2990-00-870-7520
What are the manufacturers of nsn 2990008707520?
Does this nsn 2990008707520 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 2990008707520
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 2990008707520 contain any precious metals?
Precious metal content is unknown.
Does nsn 2990008707520 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 2990008707520?
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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