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 7035-00-349-8571
NSN 5925-00-509-8773
NSN 5960-01-258-0814
NSN 4140-01-646-1617
NSN 5965-00-732-8608
NSN 5999-01-019-4868
NSN 2925-01-620-9673
NSN 7035-01-438-1269
NSN 5930-01-144-2157
NSN 6105-00-398-4673
NSN 5990-01-210-9788
NSN 5895-01-010-1742