NSN 1240-00-291-3570
Part Details | OPTICAL ELEMENT RETAINER
1240-00-291-3570 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: 7583446, 1240-00-291-3570, 00-291-3570, 1240002913570, 002913570
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | SEP 09, 1968 | 00-291-3570 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
RECESSED
Cross Reference | NSN 1240-00-291-3570
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7583446 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-291-3570
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | RECESSED |
| HOLE DIAMETER | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| OVERALL LENGTH | 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| RECESS DIAMETER | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| RECESS DEPTH | 0.150 INCHES MINIMUM AND 0.180 INCHES MAXIMUM |
| THREAD SIZE | 0.648 IN.-48NS-3A |
| COUNTERBORE TAPER ANGLE IN DEG | 60.0 |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-354, COND T-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | ALUMINUM ALLOY 2024 |
| SURFACE TREATMENT | ANODIZE |
| DRIVE TYPE | SLOTTED |
| HOLE OR SLOT QUANTITY | 2 |
| WIDTH | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM |
| DEPTH | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| SETSCREW NOTCH | PROVIDED |
| FSC APPLICATION DATA | TELESCOPE,STRAIGHT M86F |
