National Item Identification Number
01-049-4619
010494619
9330-01-049-4619
9330010494619
National Stock Number
Item Name
WINDOW,OBSERVATION
Federal Supply Class
9330
Description
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.
Commercial and Government Entity Code (Supplier Data)
53711
53711
D9182
Reference Numbers (Part Numbers)
608-4,669-575-9
608-4,669-592
608-4669592
Required Categories
STYLE DESIGNATOR
OVERALL DIAMETER
OVERALL THICKNESS
MATERIAL
MATERIAL DOCUME
Required Description
4 CIRCULAR
4.490 INCHES MINIMUM AND
4.510 INCHES MAXIMUM
0.490 INCHES MINIMUM