Window furnished with a knurled ring around circumference
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: Articles of plastics & articles of other materials of heading 3901 to 3914, nesoi
NSN 5996-00-245-2581
NSN 5985-01-227-2646
NSN 5975-01-499-4553
NSN 5975-01-197-1923
NSN 5960-00-548-6528
NSN 5930-01-370-3799
NSN 5920-01-048-0766
NSN 6110-01-437-6430
NSN 2925-01-157-9204
NSN 6620-00-435-3187
NSN 5835-01-005-8564
NSN 5996-00-351-2369