NSN 1240-01-333-0257
Part Details | OPTICAL ELEMENT RETAINER
1240-01-333-0257 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: 132309922, 13230992-2, 132309922, 13230992-2, 1240-01-333-0257, 01-333-0257, 1240013330257, 013330257
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 21, 1991 | 01-333-0257 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
RECESSED
Cross Reference | NSN 1240-01-333-0257
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 13230992-2 | 04939 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN |
| 13230992-2 | 58260 | PROGRAM MANAGER ADVANCED ATTACKHELICOPTER BARCOM AMCPM-AAH |
Technical Data | NSN 1240-01-333-0257
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | RECESSED |
| HOLE DIAMETER | 1.095 INCHES MINIMUM AND 1.105 INCHES MAXIMUM |
| OVERALL LENGTH | 0.235 INCHES MINIMUM AND 0.245 INCHES MAXIMUM |
| RECESS DIAMETER | 1.095 INCHES MINIMUM AND 1.105 INCHES MAXIMUM |
| THREAD SIZE | 1 5/16-32 |
| HOLE CHAMFER ANGLE IN DEG | 23.25 |
| HOLE CHAMFER DIAMETER | 1.255 INCHES MINIMUM AND 1.260 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING |
| SURFACE TREATMENT | ANODIZE |
| DRIVE TYPE | SLOTTED |
| HOLE OR SLOT QUANTITY | 4 |
| WIDTH | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| DRIVE FACILITY ANGULAR SPACING IN DEG | 90.0 |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| GUIDE DESIGN | THREAD CHAMFER |
| GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE |
| SETSCREW NOTCH | NOT PROVIDED |