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National Stock Number:
1240-00-683-9127
Federal Supply Class:
1240
National Item Identification Number:
006839127
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:
| 1240006839127 | A00AM | E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE | | 8574727 | 03829 | GENERAL SCIENTIFIC CORP | | 8574727 | 19200 | US ARMY ARDEC RDECOM | | 8574727 | 52808 | DUNLIN MANUFACTURING / SKYPEN INDUSTRIES INC | | MIL013830 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| MATERIAL | GLASS OPTICAL | | MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, TYPE 517-645, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | REFRACTION INDEX | 1.5170 NOMINAL | | POLISHED SURFACE | BOTH | | POLISHED PERIPHERY | NOT PROVIDED | | DIAMETER | 42.8626 MILLIMETERS NOMINAL | | THICKNESS | 3.1750 MILLIMETERS NOMINAL | | FSC APPLICATION DATA | TELESCOPE,105C,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 81349 | | NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL013830 | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 19200 | | DESIGN CONTROL REFERENCE | 8574727 |
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