Stress relief annealed
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 5905-01-367-6364
NSN 5996-01-545-7932
NSN 5998-00-222-7755
NSN 5975-00-613-2345
NSN 5999-01-117-1787
NSN 6220-01-036-1626
NSN 6135-01-265-1384
NSN 5895-01-264-4886
NSN 6240-01-104-5085
NSN 5935-01-200-6083
NSN 5895-00-913-6448
NSN 6110-00-179-9996