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National Stock Number:
1240-00-551-1926
Federal Supply Class:
1240
National Item Identification Number:
005511926
Description:
WINDOW,OPTICAL INSTRUMENT
Detail:
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.
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Manufacturer Information:
| 7591265 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| BEVEL ANGLE IN DEG | 45.000 NOMINAL | | BEVEL DEPTH | 0.020 INCHES NOMINAL | | DIAMETER | 2.348 INCHES NOMINAL | | DISPERSION | 64.5 ANGSTROMS NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, GRADE D, TYPE 517-645 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED | | MATERIAL | GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED | | POLISHED PERIPHERY | PROVIDED | | POLISHED SURFACE | BOTH | | REFRACTION INDEX | 1.5170 NOMINAL | | SURFACE FINISH | FINE GROUND | | THICKNESS | 0.125 INCHES NOMINAL |
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