NSN 1240-00-389-3557
Part Details | OPTICAL ELEMENT RETAINER
1240-00-389-3557 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: 233057PC9, 1240-00-389-3557, 00-389-3557, 1240003893557, 003893557
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 01, 1963 | 00-389-3557 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
SHOULDERED
Cross Reference | NSN 1240-00-389-3557
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 233057PC9 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 1240-00-389-3557
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | SHOULDERED |
| SHOULDER DIAMETER | 1.450 INCHES NOMINAL |
| SHOULDER LENGTH | 0.050 INCHES NOMINAL |
| TAPERED HOLE MINOR DIAMETER | 1.333 INCHES NOMINAL |
| TAPER ANGLE IN DEG | 2.6 |
| OVERALL LENGTH | 0.250 INCHES NOMINAL |
| FLANGE THREAD SIZE | 1.500 IN.-32 |
| MATERIAL | COPPER ALLOY |
| DRIVE TYPE | SLOTTED |
| HOLE OR SLOT QUANTITY | 2 |
| WIDTH | 0.060 INCHES NOMINAL |
| DEPTH | 0.050 INCHES NOMINAL |
| DRIVE FACILITY ANGULAR SPACING IN DEG | 180.0 |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| GUIDE DESIGN | THREAD CHAMFER |
| GUIDE LOCATION | BOTH EDGES |
| SETSCREW NOTCH | NOT PROVIDED |
| END ITEM IDENTIFICATION | TELESCOPE MK74 |
