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National Stock Number:
6650-00-800-4092
Federal Supply Class:
6650
National Item Identification Number:
008004092
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:
| 415275PC1 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | 415275PC1 | 53711 | NAVAL SEA SYSTEMS COMMAND | | JANG174 | 81350 | JOINT ARMY-NAVY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | TYPE517-645GRADEC | 81350 | JOINT ARMY-NAVY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| BEVEL ANGLE IN DEG | 45.000 NOMINAL | | BEVEL DEPTH | 1.500 MILLIMETERS NOMINAL | | DIAMETER | 55.515 INCHES MINIMUM AND 55.520 INCHES MAXIMUM | | DISPERSION | 64.000 ANGSTROMS MINIMUM AND 65.000 ANGSTROMS MAXIMUM | | FSC APPLICATION DATA | TELESCOPE MK 90 MOD 0 | | MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, TYPE 517-645, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED | | MATERIAL | GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED | | POLISHED PERIPHERY | PROVIDED | | POLISHED SURFACE | BOTH | | REFRACTION INDEX | 1.5150 MINIMUM AND 1.5190 MAXIMUM | | SURFACE FINISH | POLISHED | | THICKNESS | 13.200 MILLIMETERS MINIMUM AND 13.600 MILLIMETERS MAXIMUM |
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