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Optical Instrument Window NSN 1240-00-531-6361

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 1240-00-531-6361 NSN: 1240-00-531-6361

Features and Characteristics

Diameter
Between 2.261 inches and 2.264 inches
Thickness
Between 0.230 inches and 0.250 inches
Bevel Depth
Between 0.010 inches and 0.020 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
005316361
NSN
1240005316361

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5316361
Cage Code:
19200
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 1240-00-531-6361
What are the manufacturers of nsn 1240005316361?
Does this nsn 1240005316361 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240005316361
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 1240005316361 contain any precious metals?
No precious metal content.
Does nsn 1240005316361 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240005316361?
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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