NSN 1240-00-443-1021
Part Details | OPTICAL ELEMENT RETAINER
1240-00-443-1021 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.
Alternate Parts: 10539351, 1240-00-443-1021, 00-443-1021, 1240004431021, 004431021
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | APR 03, 1969 | 00-443-1021 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
RECESSED
Cross Reference | NSN 1240-00-443-1021
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 10539351 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-443-1021
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | RECESSED |
| HOLE DIAMETER | 1.620 INCHES MINIMUM AND 1.630 INCHES MAXIMUM |
| OVERALL LENGTH | 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| RECESS ANGLE IN DEG | 90.0 |
| RECESS DEPTH | 0.062 INCHES NOMINAL |
| THREAD SIZE | 2.000 IN.-32NS-2A |
| MATERIAL | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 6061 |
| DRIVE TYPE | DRILLED HOLE |
| HOLE OR SLOT QUANTITY | 4 |
| DIAMETER | 0.094 INCHES NOMINAL |
| DEPTH | 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM |
| DRIVE FACILITY ANGULAR SPACING IN DEG | 90.0 |
| RADIUS FROM GEOMETRIC AXIS TO HOLE CENTER | 0.906 INCHES NOMINAL |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| GUIDE DESIGN | THREAD CHAMFER |
| GUIDE LOCATION | BOTH EDGES |
| SETSCREW NOTCH | NOT PROVIDED |
| FSC APPLICATION DATA | PERISCOPE,TANK M50 |
