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 5835-01-279-9508
NSN 5935-00-144-8017
NSN 6145-01-534-6775
NSN 5910-01-149-4882
NSN 6240-01-624-7173
NSN 5999-01-103-9501
NSN 6620-00-350-5817
NSN 7035-01-240-0541
NSN 5945-00-080-5764
NSN 5835-01-502-9228
NSN 6645-01-083-2001
NSN 5960-01-589-6846