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 5996-01-459-8590
NSN 6240-00-658-3207
NSN 6145-01-528-6388
NSN 6130-01-357-7918
NSN 6685-01-074-1621
NSN 5910-00-279-7318
NSN 5895-01-179-1757
NSN 5920-01-513-9340
NSN 6650-00-003-5413
NSN 6645-01-171-3242
NSN 5895-00-375-5351
NSN 6105-01-089-6321