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Optical Instrument Window NSN 1240-00-540-6185

Item Description

A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.

NSN 1240-00-540-6185 NSN: 1240-00-540-6185

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Features and Characteristics

Diameter
Between 1.528 inches and 1.531 inches
Thickness
Between 0.240 inches and 0.270 inches
Polished Surface
Both
Polished Periphery
Not provided
Criticality Code Justification
Feat
Special Features
Light deviation not to exceed 5 min of arc and surface quali type 80-50
Material
Glass, optical, mil-g-174, grade c
Material
Glass, optical, mil-g-174, grade c
Fsc Application Data
Infinity sight
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
005406185
NSN
1240005406185

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
8229032
Cage Code:
03829
Status:
A
MSDS:
Part Number:
A11233
Cage Code:
05584
Status:
A
MSDS:
Part Number:
1240005406185
Cage Code:
SCY13
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 9803200000
  • NAICS: 990000
  • SITC: 93100
  • Description: Military equipments not identified by kind
  • End Use (Code 50060):
    Military apparel and footwear

Q & A

Frequently asked questions for NSN 1240-00-540-6185
What are the manufacturers of nsn 1240005406185?
Does this nsn 1240005406185 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240005406185
A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. this item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.
Does nsn 1240005406185 contain any precious metals?
Precious metal content is unknown.
Does nsn 1240005406185 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240005406185?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
10908
FIIG:
T271-F
App. Key:
FA
Cond. Code:
2
Status:
A

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