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National Stock Number:
6650-01-057-1189
Federal Supply Class:
6650
National Item Identification Number:
010571189
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:
| 7361255 | 07869 | AIR FORCE CAMBRIDGE RESEARCH LABORATORIES L G HANSCOM FIELD |
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Techincal Specification:
| DIAMETER | 3.248 INCHES MINIMUM AND 3.250 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | DD-G-451,TYPE I,CLASS 1,QUALITY Q1 OR Q2 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED | | MATERIAL | GLASS BOROSILICATE LOCATION NOT OTHERWISE SPECIFIED | | THICKNESS | 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
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