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 5945-01-429-9534
NSN 5985-01-157-9426
NSN 5999-01-342-3455
NSN 5960-00-335-3394
NSN 6650-01-625-7826
NSN 5999-00-841-8798
NSN 6645-01-305-9135
NSN 6130-01-521-4077
NSN 6320-01-544-6447
NSN 4140-00-068-8136
NSN 6130-01-646-3916
NSN 2925-01-448-2880