NSN 9340-00-990-7253
Part Details | OBSERVATION WINDOW
9340-00-990-7253 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: 8619814, 9340-00-990-7253, 00-990-7253, 9340009907253, 009907253
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 93 | JAN 01, 1963 | 00-990-7253 | 16880 ( WINDOW, OBSERVATION ) |
REFERENCE DRAWINGS & PICTURES
ROUNDED CORNERS
Cross Reference | NSN 9340-00-990-7253
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8619814 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 9340-00-990-7253
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | ROUNDED CORNERS |
| OVERALL LENGTH | 3.037 INCHES MINIMUM AND 3.052 INCHES MAXIMUM |
| OVERALL WIDTH | 7.600 INCHES MINIMUM AND 7.615 INCHES MAXIMUM |
| OVERALL THICKNESS | 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| FIRST CORNER RADIUS | 0.187 INCHES NOMINAL |
| SECOND CORNER RADIUS | 0.187 INCHES NOMINAL |
| THIRD CORNER RADIUS | 0.187 INCHES NOMINAL |
| FOURTH CORNER RADIUS | 0.187 INCHES NOMINAL |
| MATERIAL | GLASS PLATE |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,CLASS 1,GRADE C MIL STD SINGLE MATERIAL RESPONSE |
| SURFACE FINISH | POLISHED |
| MATERIAL TRANSPARENCY | CLEAR |
| EDGE TYPE | BEVELED |
| PLY QUANTITY | 1 |
| FEATURES PROVIDED | LIGHT REDUCING |
| SPECIAL FEATURES | LIGHT DEVIATION NOT TO EXCEED 3 MINUTES OF ARC,SURFACE QUALITY 80-50 AND ONE EDGE 0.120 IN. /FACE WIDTH/ BY 30 DEG CHAMFER |