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 4140-01-559-6034
NSN 6620-00-075-6667
NSN 5895-01-626-3772
NSN 5960-01-328-8248
NSN 5998-00-079-0199
NSN 7035-00-470-4977
NSN 6685-01-627-9606
NSN 6105-00-408-5552
NSN 5905-01-630-5088
NSN 4140-00-658-7271
NSN 5975-00-905-0951
NSN 6650-01-599-2988