Four chamfered corners 0.140 in. By 45 deg.
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 6650-00-775-6560
NSN 6685-00-966-4446
NSN 5950-00-321-2055
NSN 5895-01-482-1592
NSN 5945-00-009-4598
NSN 5925-00-035-8469
NSN 6145-00-135-1436
NSN 5935-00-554-0244
NSN 5998-00-596-9568
NSN 5905-01-160-5385
NSN 5915-01-531-0250
NSN 5950-00-919-9043