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National Stock Number:
1240-00-944-7683
Federal Supply Class:
1240
National Item Identification Number:
009447683
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:
| 8624636 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| DIAMETER | 1.700 INCHES NOMINAL | | FSC APPLICATION DATA | TELESCOPE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-1366 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED | | MATERIAL | GLASS LOCATION NOT OTHERWISE SPECIFIED | | POLISHED PERIPHERY | NOT PROVIDED | | POLISHED SURFACE | BOTH | | SPECIAL FEATURES | LIGHT DEVIATION NOT TO EXCEED 2 MINUTES OF ARC AND SURFACE QUALITY 60-40 | | THICKNESS | 0.150 INCHES NOMINAL |
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