NSN 1240-01-321-0251 799204832001, 799204832-001, 01-321-0251
Product Details | OPTICAL ELEMENT RETAINER
1240-01-321-0251 A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see CELL, OPTICAL ELEMENT. Excludes RING, EXTERNALLY THREADED.20312400038Optical Sighting and Ranging Equipment58550055Night Vision Equipment, Emitted and Reflected Radiation66500063Optical Instruments, Test Equipment, Components and Accessories
Part Alternates: 799204832001, 799204832-001, 1240-01-321-0251, 01-321-0251, 1240013210251, 013210251
Fire Control Equipment | Optical Sighting and Ranging Equipment
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | 07 JUN 1990 | 01-321-0251 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
Cross Reference | NSN 1240-01-321-0251
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 799204832-001 | 04939 | LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN |
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Technical Data | NSN 1240-01-321-0251
| Characteristic | Specifications |
|---|---|
| HOLE DIAMETER | 0.750 INCHES NOMINAL |
| OVERALL LENGTH | 0.400 INCHES NOMINAL |
| MATERIAL | PLASTIC |
| DRIVE TYPE | KNURL |
Restrictions/Controls & Freight Information | NSN 1240-01-321-0251
| 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: | B | Munitions List Item - Mutilation (MUT) to the point of scrap required. (Formerly: Demilitarization not required. Trade Security Controls (TSCs) required at disposition.) |
| Precious Metals Indicator Code: | U | Precious metal type is unknown |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||