Part Details | OBSERVATION WINDOW
9340-01-164-5252 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.
Alternate Parts: 4L4, MB42021 PC9, MB4202-1 PC9, 4L4, MB42021 PC9, MB4202-1 PC9, 9340-01-164-5252, 01-164-5252, 9340011645252, 011645252
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 93 | OCT 19, 1983 | 01-164-5252 | 16880 ( WINDOW, OBSERVATION ) |
REFERENCE DRAWINGS & PICTURES
CIRCULAR
Cross Reference | NSN 9340-01-164-5252
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 4L4 | 12763 | DYNALEC CORPORATION |
| MB4202-1 PC9 | 12763 | DYNALEC CORPORATION |
| 4L4 | 20049 | THE ELECTRIC TACHOMETER CORP. |
| MB4202-1 PC9 | 20049 | THE ELECTRIC TACHOMETER CORP. |
Technical Data | NSN 9340-01-164-5252
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | CIRCULAR |
| OVERALL DIAMETER | 4.875 INCHES NOMINAL |
| OVERALL THICKNESS | 0.250 INCHES NOMINAL |
| MATERIAL | GLASS |
| MATERIAL TRANSPARENCY | CLEAR |