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National Stock Number:
1240-01-068-0399
Federal Supply Class:
1240
National Item Identification Number:
010680399
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:
| SM-D-805048 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| LENGTH | 3.370 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE A, TYPE 517-642 MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | POLISHED PERIPHERY | PROVIDED | | SPECIAL FEATURES | MATERIAL USED IN THE MANUFACTURE OF THIS OPTICAL PART SHALL NOT CONTAINTHORIUM,OTHER RADIOACTVE MATERIAL,OR ANY COMBINATION OF NUCLEAR MATERIALS INEXCESS OF 0.05 PERCENT BY WEIGHT AS DEFINED BY THE TITLE 10,CODE OF FEDERAL REGULATIONS,PART 40 | | WIDTH | 1.670 INCHES NOMINAL | | THICKNESS | 0.200 INCHES NOMINAL |
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