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 5930-01-616-6079
NSN 5985-01-151-9375
NSN 6645-01-582-6688
NSN 6150-01-272-4997
NSN 6645-00-876-4413
NSN 6105-01-363-9002
NSN 5985-01-120-5282
NSN 5925-01-170-7587
NSN 5998-01-252-8803
NSN 5915-01-321-8119
NSN 5930-01-094-6608
NSN 6620-01-144-0827