NSN 1240-00-620-3759
Part Details | OPTICAL ELEMENT RETAINER
1240-00-620-3759 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: 8200224, 1240-00-620-3759, 00-620-3759, 1240006203759, 006203759
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 01, 1963 | 00-620-3759 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
RECESSED
Cross Reference | NSN 1240-00-620-3759
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8200224 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-620-3759
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | RECESSED |
| HOLE DIAMETER | 0.741 INCHES MINIMUM AND 0.746 INCHES MAXIMUM |
| OVERALL LENGTH | 0.750 INCHES NOMINAL |
| RECESS DIAMETER | 0.800 INCHES MINIMUM AND 0.805 INCHES MAXIMUM |
| RECESS DEPTH | 0.661 INCHES NOMINAL |
| THREAD SIZE | 1.062 IN.-32NS-2 |
| HOLE CHAMFER ANGLE IN DEG | 45.0 |
| HOLE CHAMFER DIAMETER | 0.865 INCHES NOMINAL |
| MATERIAL | ALUMINUM ALLOY 2024 |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| GUIDE DESIGN | THREAD CHAMFER |
| GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE |
| SETSCREW NOTCH | NOT PROVIDED |
| SPECIAL FEATURES | EXTERNAL THREADED,RAISED PORTION ONLY 0.375 IN. OF OVERALL LENGTH |