NSN 5855-01-180-2172
Part Details | OPTICAL ELEMENT RETAINER
5855-01-180-2172 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: 13075884, 13075884, 13075884, 5855-01-180-2172, 01-180-2172, 5855011802172, 011802172
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 58 | MAY 25, 1984 | 01-180-2172 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
SHOULDERED
Cross Reference | NSN 5855-01-180-2172
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 13075884 | 04939 | LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN |
| 13075884 | 9Y204 | NORMAN ENGINEERING CORPORATION |
| 13075884 | 58260 | PROGRAM MANAGER ADVANCED ATTACKHELICOPTER BARCOM AMCPM-AAH |
Technical Data | NSN 5855-01-180-2172
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | SHOULDERED |
| SHOULDER LENGTH | 0.170 INCHES NOMINAL |
| HOLE DIAMETER | 2.188 INCHES NOMINAL |
| OVERALL LENGTH | 0.420 INCHES NOMINAL |
| FLANGE DIAMETER | 2.500 INCHES NOMINAL |
| SHOULDER THREAD SIZE | 2.3125 IN.-40 |
| MATERIAL | ALUMINUM ALLOY 6061 |
| DRIVE TYPE | SLOTTED |
| HOLE OR SLOT QUANTITY | 4 |
| DIAMETER | 2.500 INCHES NOMINAL |
| WIDTH | 0.060 INCHES NOMINAL |
| DEPTH | 0.040 INCHES NOMINAL |
| DRIVE FACILITY ANGULAR SPACING IN DEG | 90.0 |
| INTERNAL ANNULAR SERRATION | NOT PROVIDED |
| GUIDE DESIGN | THREAD RELIEF |
| GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE |
| SETSCREW NOTCH | NOT PROVIDED |