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 6650-01-548-3495
NSN 6685-01-340-7998
NSN 6645-01-406-0428
NSN 6145-01-081-6255
NSN 6135-01-483-1501
NSN 6240-01-218-5187
NSN 5835-01-222-2437
NSN 5855-01-465-6144
NSN 5965-01-100-0942
NSN 7035-01-205-6909
NSN 6130-01-414-9621
NSN 6145-01-523-7322