Four chamfered corners 0.140 in. By 45 deg.
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 5960-01-183-3779
NSN 6240-01-086-7521
NSN 5965-01-296-8991
NSN 6650-01-277-8273
NSN 5998-00-111-3180
NSN 5855-01-041-9392
NSN 5905-01-605-8672
NSN 6145-00-493-4073
NSN 6610-01-371-3006
NSN 5910-01-222-2676
NSN 6650-01-421-2370
NSN 6650-01-268-9702