NSN 1240-01-320-0121
Part Details | OPTICAL ELEMENT RETAINER
1240-01-320-0121 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: 13077324501, 13077324-501, 13077324501, 13077324-501, 13077324501, 13077324-501, 13077324501, 13077324-501, 1240-01-320-0121, 01-320-0121, 1240013200121, 013200121
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | MAY 17, 1990 | 01-320-0121 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
RECESSED
Cross Reference | NSN 1240-01-320-0121
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 13077324-501 | 04939 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN |
| 13077324-501 | 61801 | OMEGA PRECISION |
| 13077324-501 | 9J254 | PARAGON MACHINE INC. |
| 13077324-501 | 58260 | PROGRAM MANAGER ADVANCED ATTACKHELICOPTER BARCOM AMCPM-AAH |
Technical Data | NSN 1240-01-320-0121
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | RECESSED |
| HOLE DIAMETER | 1.570 INCHES MINIMUM AND 1.575 INCHES MAXIMUM |
| OVERALL LENGTH | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| RECESS DIAMETER | 1.968 INCHES MINIMUM AND 1.969 INCHES MAXIMUM |
| RECESS DEPTH | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
| THREAD SIZE | 1.9375 IN.-32 |
| HOLE CHAMFER ANGLE IN DEG | 15.0 |
| HOLE CHAMFER DIAMETER | 1.715 INCHES MINIMUM AND 1.725 INCHES MAXIMUM |
| MATERIAL | ALUMINUM ALLOY 6061 |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| GUIDE DESIGN | THREAD CHAMFER |
| GUIDE LOCATION | BOTH EDGES |
| SETSCREW NOTCH | NOT PROVIDED |