National Item Identification Number
00-881-6358
008816358
9330-00-881-6358
9330008816358
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)
94033
D9182
Reference Numbers (Part Numbers)
521D28
521D28REVC
Required Categories
STYLE DESIGNATOR
OVERALL DIAMETER
OVERALL THICKNESS
SURFACE FINISH
MATERIAL
Required Description
4 CIRCULAR
23.812 INCHES NOMINAL
0.250 INCHES NOMINAL
POLISHED
CLEAR
FLAT F