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Optical Instrument Window NSN 1240-01-497-4402

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 1240-01-497-4402 NSN: 1240-01-497-4402

Features and Characteristics

Diameter
34.0 millimeters
Thickness
Between 14.9 millimeters and 15.1 millimeters
End Application
Fc33 electrical and electronics adapter assembly pn 5612561; periscope.
Polished Periphery
Not provided
Part Name Assigned By Controlling Agency
Eyepiece, el-3, doublet
Special Features
Two lens pieces bonded together. Convex radii are 30.5 mm and 38.0 mm max.
Material
Glass, optical and magnesium fluoride
Material
Glass optical and magnesium fluoride
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
014974402
NSN
1240014974402

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5612977
Cage Code:
53711
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 1240-01-497-4402
What are the manufacturers of nsn 1240014974402?
Does this nsn 1240014974402 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240014974402
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 1240014974402 contain any precious metals?
No precious metal content.
Does nsn 1240014974402 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240014974402?
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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