8200495

View detailed technical data, stock status, and sourcing information for: 8200495

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8200495
Federal Supply Group
Fire Control Equipment
Federal Supply Classification
1240 Optical Sighting and Ranging Equipment
National Stock Number
1240-00-620-4979
Item Name Code
10908
Assigment Date
01/01/1963 (63 years ago)

2.022 inches minimum and 2.025 inches maximum diameter, 1.5170 nominal refraction index, both polished surface, 0.418 inches minimum and 0.458 inches maximum thickness, 0.020 inches minimum and 0.030 inches maximum bevel depth

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Diameter
2.022 inches minimum and 2.025 inches maximum
Thickness
0.418 inches minimum and 0.458 inches maximum
Bevel Depth
0.020 inches minimum and 0.030 inches maximum
Refraction Index
1.5170 nominal
Polished Surface
both
Dispersion
64.500 angstroms nominal
Reflection Reducing Surface
both
Polished Periphery
not provided
Bevel Angle In Deg
42.000 minimum and 48.000 maximum
Material
glass optical location not otherwise specified
Material Document And Classification
mil-g-174, grade b, type 517-645 mil spec single material response location not otherwise specified

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
1240006204979 Optical Instrument Window
8200495 Optical Instrument Window

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 1240-00-620-4979?
The FSCG of the NSN 1240-00-620-4979 is 1240
Does the NSN 1240-00-620-4979 have a Schedule B code assigned?
Yes, the Schedule B code is 9803200000
Does NSN 1240-00-620-4979 require demilitarization?
Usml or ccl military items - demil required. Destroy item and components to prevent restoration or repair to a usable condition. (note 5).
Does NSN 1240-00-620-4979 contain precious materials?
Precious metal content is unknown
Does NSN 1240-00-620-4979 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 1240-00-620-4979 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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