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 6105-01-015-0827
NSN 5925-01-521-3915
NSN 5935-01-059-3625
NSN 6650-00-462-4700
NSN 6145-01-570-2597
NSN 5855-00-688-9954
NSN 6110-01-462-0214
NSN 6105-01-581-4009
NSN 6240-01-408-0848
NSN 6650-01-183-0711
NSN 6110-01-072-9370
NSN 6105-01-236-5290