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 5855-00-114-4954
NSN 5960-01-395-6939
NSN 6645-01-032-5337
NSN 5999-01-414-7667
NSN 6220-01-157-0628
NSN 6130-00-789-5231
NSN 5945-01-630-2480
NSN 5915-00-312-4398
NSN 6145-01-466-0113
NSN 5950-01-650-6804
NSN 5998-01-593-9918
NSN 5835-01-647-6426