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Optical Instrument Window NSN 1240-00-026-8140

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 1240-00-026-8140 NSN: 1240-00-026-8140

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Features and Characteristics

Diameter
37.0 millimeters
Thickness
4.5 millimeters
End Application
Telescope mk74
Bevel Depth
1.0 millimeters
Polished Periphery
Not provided
Bevel Angle In Deg
45.000
Material
Glass
Material
Glass
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
000268140
NSN
1240000268140

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
279524PC3
Cage Code:
10001
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 1240-00-026-8140
What are the manufacturers of nsn 1240000268140?
Does this nsn 1240000268140 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240000268140
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 1240000268140 contain any precious metals?
No precious metal content.
Does nsn 1240000268140 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240000268140?
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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