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Optical Instrument Window NSN 1240-00-989-5947

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 1240-00-989-5947 NSN: 1240-00-989-5947

Features and Characteristics

Width
Between 3.225 inches and 3.240 inches
Thickness
Between 0.240 inches and 0.250 inches
Length
Between 4.225 inches and 4.240 inches
Bevel Depth
Between 0.105 inches and 0.125 inches
Polished 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 Application Data
Periscope
FSC
1240 Optical Sighting And Ranging Equipment
NIIN
009895947
NSN
1240009895947

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
8619922
Cage Code:
19200
Status:
A
MSDS:
Part Number:
1240009895947
Cage Code:
A00AM
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 1240-00-989-5947
What are the manufacturers of nsn 1240009895947?
Does this nsn 1240009895947 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 1240009895947
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 1240009895947 contain any precious metals?
Precious metal content is unknown.
Does nsn 1240009895947 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 1240009895947?
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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