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 6105-01-005-4825
NSN 5975-00-256-5556
NSN 5920-01-295-9250
NSN 5930-01-024-1241
NSN 6650-00-172-7519
NSN 6105-01-030-4405
NSN 7035-01-215-2449
NSN 5960-01-012-4936
NSN 5998-00-631-1540
NSN 5925-00-215-3758
NSN 5999-01-597-7813
NSN 5895-01-358-2572