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 6320-01-072-2073
NSN 5960-01-094-9540
NSN 5910-01-512-1978
NSN 5996-01-486-5300
NSN 5835-01-340-7722
NSN 5920-01-189-3400
NSN 5925-01-318-7846
NSN 5915-01-083-1804
NSN 5960-00-628-2003
NSN 5996-01-633-7979
NSN 5965-00-172-5103
NSN 5985-01-262-2558