NSN 1240-00-916-0285
Part Details | OPTICAL ELEMENT RETAINER
1240-00-916-0285 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: 701C983P1, 1240-00-916-0285, 00-916-0285, 1240009160285, 009160285
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 26, 1966 | 00-916-0285 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
RECESSED
Cross Reference | NSN 1240-00-916-0285
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 701C983P1 | 89954 | BAE SYSTEMS CONTROLS INC. |
Technical Data | NSN 1240-00-916-0285
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | RECESSED |
| HOLE DIAMETER | 4.280 INCHES NOMINAL |
| OVERALL LENGTH | 0.195 INCHES NOMINAL |
| RECESS DIAMETER | 4.100 INCHES MINIMUM AND 4.120 INCHES MAXIMUM |
| RECESS DEPTH | 0.180 INCHES NOMINAL |
| THREAD SIZE | 4.375 IN.-32 UNS-2B |
| HOLE CHAMFER ANGLE IN DEG | 45.0 |
| HOLE CHAMFER DIAMETER | 4.220 INCHES MINIMUM AND 4.240 INCHES MAXIMUM |
| DRIVE TYPE | SLOTTED |
| HOLE OR SLOT QUANTITY | 4 |
| WIDTH | 0.070 INCHES NOMINAL |
| DEPTH | 0.035 INCHES NOMINAL |
| 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 |
| FSC APPLICATION DATA | AIRCRAFT GUNNERY FIRE CONTROL SYSTEM |