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Optical Instrument Window NSN 1240-01-191-1670

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 1240-01-191-1670 NSN: 1240-01-191-1670

Features and Characteristics

Diameter
1.692 inches
Thickness
0.157 inches
Cubic Measure
0.4495 cubic inches
Polished Surface
Both
Polished Periphery
Not provided
Bevel Angle In Deg
45.000
Special Features
Light deviation not to exceed 1.0minute of arc; surface quality is 80-50; spherical power not to exceed 4 millidiopters; astigmatism not to exceed 2 millidiopters
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
011911670
NSN
1240011911670

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
8615947
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 1240-01-191-1670
What are the manufacturers of nsn 1240011911670?
Does this nsn 1240011911670 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240011911670
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 1240011911670 contain any precious metals?
No precious metal content.
Does nsn 1240011911670 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240011911670?
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
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