NSN 1240-00-555-1661 8261623, 00-555-1661, 005551661
Product Details | OBSERVATION WINDOW
1240-00-555-1661 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.20293300029Plastics Fabricated Materials93400026Glass Fabricated Materials
Part Alternates: 8261623, 1240-00-555-1661, 00-555-1661, 1240005551661, 005551661
Fire Control Equipment | Optical Sighting and Ranging Equipment
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | 01 JAN 1963 | 00-555-1661 | 16880 ( WINDOW, OBSERVATION ) |
Drawings & Photos | NSN 1240-00-555-1661
Cross Reference | NSN 1240-00-555-1661
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8261623 | 19200 | US ARMY ARDEC RDECOM |
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Technical Data | NSN 1240-00-555-1661
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | 4 CIRCULAR |
| OVERALL DIAMETER | 1.934 INCHES MINIMUM AND 1.937 INCHES MAXIMUM |
| OVERALL THICKNESS | 0.312 INCHES NOMINAL |
| MATERIAL | GLASS PLATE |
| SURFACE FINISH | POLISHED |
| MATERIAL TRANSPARENCY | CLEAR |
| EDGE TYPE | BEVELED |
| PLY QUANTITY | 1 |
| TEMP AT MAXIMUM OPERATING PRESSURE | NOT RATED |
| MAXIMUM OPERATING PRESSURE | NOT RATED |
| HARDNESS RATING | NOT RATED |
| MINIMUM TENSILE STRENGTH | NOT RATED |
| RADIATION PROTECTION RATING | NOT RATED |
| SPECIAL FEATURES | LIGHT DEVIATION NOT TO EXCEED 2 MIN OF ARC AND SURFACE QUALITY 80-50 |
| CRITICALITY CODE JUSTIFICATION | ADAV |
| MANUFACTURERS CODE | 19200 |
| DESIGN CONTROL REFERENCE | 8261623 |
Restrictions/Controls & Freight Information | NSN 1240-00-555-1661
| Category | Code | Description |
|---|---|---|
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Precious Metals Indicator Code: | U | Precious metal type is unknown |
| Criticality Code: | Y | The item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| NMF Description | 058090 | OPTICAL GLASS NOT GROUND/POLISHED |
| Less than car load rating | J | 100.2 |
| Less than truck load rating | J | 100.2 |
| Water commodity Code | 744 | unknown |
| Originating Activity Code | XX | |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | M | Medical supplies, equipment, samples records, etc. |
| Air Special Handling | Z | No special handling required. |
| Special Handling Code | 9 | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |