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Optical Instrument Window NSN 1240-00-531-3721

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 1240-00-531-3721 NSN: 1240-00-531-3721

Features and Characteristics

Diameter
215.00 millimeters
Thickness
14.229 millimeters
Length
373.000 millimeters
Refraction Index
1.5230
Polished Surface
Both
Reflection Reducing Surface
Both
Polished Periphery
Not provided
Special Features
38.0 mm (1.4961 in.) radius on all four corners
Material
Glass, mil-g-16592, grade a
Fsc Application Data
Telescope, straight
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
005313721
NSN
1240005313721

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
248579PC1
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 1240-00-531-3721
What are the manufacturers of nsn 1240005313721?
Does this nsn 1240005313721 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240005313721
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 1240005313721 contain any precious metals?
Precious metal content is unknown.
Does nsn 1240005313721 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240005313721?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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