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National Stock Number:
1240-01-063-1348
Federal Supply Class:
1240
National Item Identification Number:
010631348
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-804998 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| LENGTH | 4.825 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 | NOT PROVIDED | | SPECIAL FEATURES | MATERAL USED IN THE MANUFACTURE OF THIS OPTICAL PART SHALL NOT CONTAIN THORIUM,OTHER RADIOACTIVE MATERIAL,OR ANY COMBINATION OF NUCLEAR MATERIALS IN EXCESS OF 0.05 PERCENT BY WEIGHT AS DEFINED BY THE TITLE 10,CODE OF FEDERAL REGULATIONS,PART 40.NO CHIPS INSIDE FREE APERTURE.ALL CHIPS OUTSIDE FREE APERTURE TO BE STONED | | WIDTH | 4.725 INCHES NOMINAL | | THICKNESS | 0.250 INCHES NOMINAL |
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