Heat resistant
A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.
Classification: Pressed or molded glass articles, wired or not, for building or construction;leaded glass windows etc; formed multicellular or foam glass
NSN 5975-00-843-2585
NSN 6105-01-535-5809
NSN 4140-00-189-0235
NSN 6240-01-601-1617
NSN 6610-01-227-1692
NSN 6105-00-173-8850
NSN 5950-01-328-8215
NSN 5835-00-936-8753
NSN 6240-00-079-0112
NSN 5945-01-607-6394
NSN 5965-01-475-7871
NSN 4140-01-031-6391