NSN 1240-01-320-1691
Part Details | OPTICAL ELEMENT RETAINER
1240-01-320-1691 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: 13077320501, 13077320-501, 13077320501, 13077320-501, 1240-01-320-1691, 01-320-1691, 1240013201691, 013201691
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | MAY 21, 1990 | 01-320-1691 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
RECESSED
Cross Reference | NSN 1240-01-320-1691
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 13077320-501 | 04939 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN |
| 13077320-501 | 58260 | PROGRAM MANAGER ADVANCED ATTACKHELICOPTER BARCOM AMCPM-AAH |
Technical Data | NSN 1240-01-320-1691
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | RECESSED |
| OVERALL LENGTH | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| RECESS DEPTH | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| THREAD SIZE | 1.980 IN.-32 |
| HOLE CHAMFER ANGLE IN DEG | 41.0 |
| MATERIAL | PLASTIC |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| GUIDE DESIGN | THREAD CHAMFER |
| GUIDE LOCATION | BOTH EDGES |
| SETSCREW NOTCH | NOT PROVIDED |