5330-00-641-0649 GASKET Index 1240-00-641-0657 WINDOW,OPTICAL INSTRUMENT

National Stock Number:
1240-00-641-0655

Federal Supply Class:
1240

National Item Identification Number:
006410655

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.


Manufacturer Information:
105610PC1110001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
FSC APPLICATION DATARANGEFINDER MK 66 MOD 0
LENGTH77.000 MILLIMETERS NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONJAN-G-174, TYPE 523-586, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALGLASS OPTICAL
SPECIAL FEATURES5.0 MM RADIUS ON CORNERS
POLISHED PERIPHERYNOT PROVIDED
POLISHED SURFACEBOTH
REFLECTION REDUCING SURFACEBOTH
REFRACTION INDEX1.5230 NOMINAL
WIDTH31.000 MILLIMETERS NOMINAL
THICKNESS3.000 MILLIMETERS NOMINAL


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