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 5996-01-545-3673
NSN 5920-00-727-1452
NSN 5960-01-215-0992
NSN 5998-00-617-3472
NSN 6220-00-226-1994
NSN 5855-00-237-4088
NSN 6220-01-540-0509
NSN 6110-00-624-1906
NSN 6320-01-607-1491
NSN 5975-01-592-9727
NSN 7035-00-455-7666
NSN 5910-01-291-6859