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Optical Instrument Window NSN 1240-00-641-0659

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 1240-00-641-0659 NSN: 1240-00-641-0659

Features and Characteristics

Width
Between 82.0 millimeters and 82.6 millimeters
Thickness
Between 11.180 millimeters and 11.688 millimeters
Length
Between 164.592 millimeters and 165.100 millimeters
Refraction Index
1.5230
Polished Surface
Both
Dispersion
58.0 angstroms
Reflection Reducing Surface
Both
Polished Periphery
Not provided
Special Features
4 corners 12.7 mm porm .20 radius
Material
Glass, mil-g-16592, grade a
Material
Glass, mil-g-16592, grade a
Fsc Application Data
Telescope mk61, mod 0
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
006410659
NSN
1240006410659

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
165642PC1
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 1240-00-641-0659
What are the manufacturers of nsn 1240006410659?
Does this nsn 1240006410659 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240006410659
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 1240006410659 contain any precious metals?
No precious metal content.
Does nsn 1240006410659 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240006410659?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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