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 2925-01-467-1192
NSN 5996-01-057-9023
NSN 5895-01-601-9173
NSN 6220-01-610-2211
NSN 6145-01-337-7682
NSN 6105-01-211-4218
NSN 5835-01-434-0790
NSN 7035-01-495-1090
NSN 4140-00-005-4574
NSN 6650-01-487-9454
NSN 5915-01-087-5553
NSN 5960-01-142-1995