NSN 1240-00-157-9642
Part Details | OPTICAL ELEMENT RETAINER
1240-00-157-9642 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: 481130PC1, 481130PC1, 1240-00-157-9642, 00-157-9642, 1240001579642, 001579642
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 01, 1963 | 00-157-9642 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
RECESSED
Cross Reference | NSN 1240-00-157-9642
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 481130PC1 | 56232 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN |
| 481130PC1 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 1240-00-157-9642
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | RECESSED |
| HOLE DIAMETER | 1.718 INCHES NOMINAL |
| OVERALL LENGTH | 0.309 INCHES NOMINAL |
| RECESS DIAMETER | 1.772 INCHES NOMINAL |
| RECESS DEPTH | 0.195 INCHES NOMINAL |
| THREAD SIZE | 2.000 IN.-32 |
| HOLE CHAMFER ANGLE IN DEG | 45.0 |
| HOLE CHAMFER DIAMETER | 1.820 INCHES NOMINAL |
| MATERIAL | COPPER ALLOY |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| GUIDE DESIGN | THREAD CHAMFER |
| GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE |
| SETSCREW NOTCH | NOT PROVIDED |
| END ITEM IDENTIFICATION | GUN SIGHT MK15 |
