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National Stock Number:
1240-00-581-2100
Federal Supply Class:
1240
National Item Identification Number:
005812100
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:
| 279422PC14 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| DIAMETER | 20.000 MILLIMETERS NOMINAL | | DISPERSION | 64.5 ANGSTROMS NOMINAL | | FSC APPLICATION DATA | TELESCOPE,STRAIGHT | | 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 | NOT PROVIDED | | POLISHED SURFACE | BOTH | | REFRACTION INDEX | 1.5170 NOMINAL | | SPECIAL FEATURES | ONE PERIPHERAL GROOVE 1 MM /0.0393 IN./ W,0.5 MM /0.0196 IN./ DEEP AND 6 MM /0.2362 IN./ LG ACROSS THK DIM | | SURFACE FINISH | POLISHED | | THICKNESS | 6.000 MILLIMETERS NOMINAL |
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