National Item Identification Number
00-275-2690
002752690
9340-00-275-2690
9340002752690
National Stock Number
Item Name
WINDOW,OBSERVATION
Federal Supply Class
9340
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)
Reference Numbers (Part Numbers)
AK29S59-221PC44
AK29S59-224PC44
AK29S59-248PC4
AK29S59-251PC4
AK29S59-257PC4
Required Categories
STYLE DESIGNATOR
OVERALL DIAMETER
OVERALL THICKNESS
MATERIAL
MATERIAL TRANSP
Required Description
4 CIRCULAR
1.862 INCHES MINIMUM AND
1.916 INCHES MAXIMUM
0.360 INCHES MINIMUM