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 5910-00-466-1580
NSN 5930-01-281-5553
NSN 5855-00-198-3197
NSN 5990-01-408-6554
NSN 2925-00-004-1278
NSN 2925-01-230-8057
NSN 6620-01-068-6224
NSN 5855-01-068-8915
NSN 6135-01-531-1413
NSN 5835-01-241-1090
NSN 5920-00-890-8999
NSN 5960-01-632-6576