4 5/16 in. Diameter drilled holes on 3 1/4 in. Bolt circle; appl to a demineralizer
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 5998-01-562-4088
NSN 5965-00-100-1291
NSN 5990-01-485-0260
NSN 5960-01-512-0233
NSN 5975-01-395-9974
NSN 5965-01-461-2850
NSN 2925-01-580-2993
NSN 6685-00-020-5058
NSN 5960-00-900-3508
NSN 6105-01-658-1456
NSN 6685-01-200-3515
NSN 5999-01-045-5884