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National Stock Number:
1240-00-542-8993
Federal Supply Class:
1240
National Item Identification Number:
005428993
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:
| 427R475H01 | 97942 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| DIAMETER | 0.490 INCHES NOMINAL | | MATERIAL | GLASS LOCATION NOT OTHERWISE SPECIFIED | | SURFACE FINISH | FINE GROUND | | THICKNESS | 0.080 INCHES NOMINAL |
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