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Optical Instrument Window NSN 1240-00-531-6365

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 1240-00-531-6365 NSN: 1240-00-531-6365

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Features and Characteristics

Diameter
Between 0.869 inches and 0.874 inches
Thickness
Between 0.082 inches and 0.092 inches
Bevel Depth
Between 0.005 inches and 0.010 inches
Refraction Index
1.5170
Polished Surface
Both
Dispersion
64.5 angstroms
Reflection Reducing Surface
Both
Polished Periphery
Not provided
Bevel Angle In Deg
Between 42.000 and 48.000
Material
Glass, optical, mil-g-174, class 1, grade c, type 517-645
Material
Glass, optical, mil-g-174, class 1, grade c, type 517-645
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
005316365
NSN
1240005316365

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5316365
Cage Code:
11934
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 1240-00-531-6365
What are the manufacturers of nsn 1240005316365?
Does this nsn 1240005316365 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240005316365
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 1240005316365 contain any precious metals?
Precious metal content is unknown.
Does nsn 1240005316365 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240005316365?
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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